Silk Bedding

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PandaSilk’s affordable silk sheets made of 19, 22, 25 & 30 Momme silk charmeuse fabric. Affordable & washable silk duvet covers, silk flat sheets, silk fitted sheets, silk pillowcases, silk bed skirts, we have everything you need.

Silk is divided into wild silk and cultivated(domestic) silk. Wild silk comes from wild silkworms, and is less durable or resistant because their filaments are not as long continuous threads like those from cultivated silk. For sheets, however, durability is an important consideration. You had better select cultivated silk because the fiber lengths are much longer. But, their cost is high. Since mulberry is the only food for silkworm, cultivated silk is most commonly known as mulberry silk, and it’s the best fabric to for silk bedding and clothing.

Silk sheets can be good for your health. The process of making silk from the cocoons of silkworms is a gentle one, which will not strip away the protein called sericin that it contains nor the amino acids that are in it. They make silk mold and mildew resistant. Therefore, silk sheets are good for allergy and asthma suffers.

Silk has a great draping ability, thus silk sheets are suitable for both summer and winter. In summer, silk can keep a personal cool for it can wick away moisture. In winter, it keeps a person warm because it gently conforms to a person’s body to remain the heat.

Silk is a continuous long fiber formed by solidification of the silk liquid secreted from the cocoon of a cooked silkworm. It is one of the earliest animal fibers used by humans.

What Momme Silk is Best for Sheets?

Momme is the unit used when describing the weight of silk thread. In other words, Momme weight describes the weight of 100 yards of silk, 45 inches wide, in pounds. Therefore, it is recommended to check labels for the manufacturer’s listing.

1 Momme= 4.3 grams/m2

  • 19 Momme silk fabric = 81 g/m2
  • 22 Momme silk fabric =94 g/m2
  • 25 Momme silk fabric =107 g/m2
  • 30 Momme silk fabric =129 g/m2
  • 40 Momme silk fabric =172 g/m2

Silk’s type also helps determine the Momme weight of the silk. For instance: Charmeuse silk fabric usually has a Momme weight of 12 to 30.

In fact, you had better select a Momme weight of greater than 16 for bedding. Here, we recommend 22 & 25 Momme silk sheets, 25 & 30 Momme silk pillowcases & 19 Momme silk clothing.

Types of silk

According to the different species of silkworm and cocoon, silk can be divided into two major types: domestic silk (cultivated silk) and wild silk.

  • Domestic Silk: Mulberry silk.
  • Wild Silk: tussah silk, eri silk & celestial silk

1. Mulberry silk

The mulberry silkworm belongs to the domestic silkworm, which is an insect that spins and forms cocoons on mulberry leaves. The cocoons formed by mulberry silkworms are called mulberry cocoons, and the silk reeled from mulberry silkworm cocoons is called mulberry silk.

In addition to white cocoons, hybrids raised in China also have beige or light green cocoons with dark and light patterns. The fineness of mulberry silk is about 2.64 dtex~3.74 dtex. Mulberry silk is a protein fiber composed of 18 amino acids. In addition to the two protein components of silk fibroin and sericin, it also contains a small amount of wax, carbohydrates, pigments and ash. Silk fibroin is the main component of silk. Generally, silk fibroin accounts for about 70% to 80% of the total silk in mulberry silk. The dry strength of mulberry silk is 26 cN/tex~34 cN/tex, and the wet strength is lower than the dry strength, about 80%~84% of the dry strength.

Mulberry silk is the main type of natural silk. The quality of silk is good. It is the main raw material for charmeuse, chiffon, crepe de chine, gauze, georgette, habutai, organza, raw silk and so on. Mulberry silk feels soft and elastic, has a natural shimmering brilliance, and gives people a sense of nobility.

2. Tussah Silk

Tussah silkworms are called Chinese tussah silkworms. They are insects that spin silk and form cocoons on tussah leaves as food. There are many varieties of tussah silkworms in China, and the currently stocked varieties are mainly monochromatic and dichromatic. The former is stocked once a year, and the cocoons formed are used as seed cocoons; the latter is stocked twice a year, and the spring cocoons are used as the seed cocoons of the autumn cocoons, and the autumn cocoons are the raw material for silk reeling.

The spring cocoons of tussah cocoons are pale yellowish brown, and the autumn cocoons are yellowish brown, and the outer layer is darker than the inner layer. The silk reeled from tussah cocoons is called tussah silk.

The average fineness of tussah silk is 6.16 dtex, and the fineness of the inner and outer layers is different. Generally, the outer layer averages 6.82 dtex, the middle layer averages 6.05 dtex, and the inner layer averages 4.95 dtex, both thicker than mulberry silk. The sericin content of tussah silk is about 12%~15% less than that of mulberry silk, and the silk fibroin in tussah silk accounts for about 85% of the total.

The dry strength of tussah silk is 37 cN/tex, and the wet strength is slightly higher than the dry strength, about 104% to 110% of the dry strength. Tussah silk has better moisture absorption, heat resistance and corrosion resistance than mulberry silk.

Tussah silk can be reeled. Tussah silk is the raw material for weaving tussah silk fabric, decorative silk fabric and some industrial and national defense silk fabrics. It is generally used to weave medium-thickness silk fabrics.

3. Eri Silk

Eri silkworm, also known as Indian silkworm, is an insect that spins cocoons on castor leaves as food. It was originally a wild silkworm that grew in the wild, eating castor leaves, but also eating cassava leaves, crane wood leaves, horse pine leaves and black cypress leaves. It is a highly adaptable polyphagous silkworm. Most of the eri silkworms now grow in the wild, and some are artificially fed indoors.

Eri silkworm is most suitable to grow in the hot, humid and rainy summer. It is native to the Assam forest in northeastern India, so it is called the Indian silkworm.

The cocoon coat of eri silkworm is thick, accounting for about 1/3 of the cocoon layer. The cocoon layer is soft and lacks elasticity, and the thickness of the cocoon varies greatly. The outer layer is loose like cotton, and there is no obvious boundary with the cocoon coat; the middle layer; the inner layer is tight, with a rebounding sound when the hands are pressed. The cocoon layer is thin and has obvious stratification. In the weight of the fresh cocoon, the cocoon coat accounts for about 3.5%, the cocoon layer accounts for about 10%, and the pupa body accounts for about 86.5%. Eri silkworm cocoons are clean and white, but their luster is not as bright as mulberry silkworm cocoons.

The cross-sectional shape of eri silk is similar to that of mulberry silk, but it is flatter than mulberry silk. Its sericin content is about 7%~12%, silk fibroin is about 85%~92%, and impurities are about 1.5%~4.0%. The fineness of the silk is about 1.65 dtex~3.3 dtex, the strength is lower than that of mulberry silk, the elongation at break and the acid resistance are similar to those of mulberry silk, but the alkali resistance is stronger than that of mulberry silk.

Eri cocoons cannot be reeled and can only be used as raw materials for spun silk.

4. Celestial Silk

Celestial silkworm, also known as the Japanese tussah, is an insect that feeds on the leaves of the Tussah genus of the Fagaceae family, such as Tussah Liaodong, Tussah mongolica, Tussah cortex, Tussah, and other leaves.

The celestial silkworm cocoon is long oval in shape and grass green. The weight of the celestial cocoon is 6g~7g, the weight of the cocoon layer is 0.5g~0.6g, and the cocoon layer rate is 7.5%~9.0%. The sericin content of celestial silk is more than that of mulberry silk and tussah silk, about 30%, and silk fibroin content is about 70%. The celestial silk fiber is fine (average fineness is 5.5 dtex~6.6 dtex), but the thickness difference is large. The cross-section of the fiber is a flat polygonal triangle, like a diamond structure, with strong refraction, and its luster is like a shining gem, which is fascinating. Once the celestial silkworm matures, the silkworm body will be bright green, known as the “green diamond”.

The celestial silk is 90~600m long, with a silk yield rate of 50%~60%, a strength of 31.2 cN/tex, and an elongation rate of about 40%. Celestial silk is rich in luster, bright color, soft texture, strong tensile force and toughness, better quality than mulberry silk and tussah silk, and has no creases. It can maintain the natural emerald color without dyeing, so it enjoys “diamond fiber”. And the good name of “Golden Silk”. In Japan, evening dresses made of celestial silk are mainly used by royals and nobles, making the wearer look extraordinarily graceful and luxurious, symbolizing the wearer’s wealth and status.

Properties of Silk

Silk fiber is the only long fiber among natural fibers. The silk is light, soft, smooth, and elastic, and has unique properties.

1. Strength & abrasion resistance

The strength of silk is generally good, as shown in Table 1.

Table 1. Comparison of strength and elongation of several kinds of silk

Breaking strength/(cN/tex) Elongation at break%
Mulberry Silk 26~34 18.0~21.0
Tussah Silk 37 25.0~27.0
Eri Silk 33.4 23.0
Celestial Silk 31.2 40.0

The abrasion resistance of silk is generally poor, and it is easy to be rubbed or even worn off by parts such as thread guides during the production process, or fluffy appears on the silk surface. If the silk surface is scratched during the printing and dyeing process, it will cause gray damage.

2. Hygroscopicity

Because there are many very fine pores in the silk fibroin, the amino acid in the silk fibroin itself has hydrophilic amino and carboxyl groups, so the moisture absorption of silk is relatively good, and its regular moisture regain rate is 11%. The silk has a fast moisture dissipation speed, even if the moisture content reaches 30%, the hand feels still not wet, so the clothing made of silk has good air permeability and is comfortable to wear. Tussah silk is more hygroscopic than mulberry silk. Because silk is highly hygroscopic, it absorbs moisture and emits water very quickly, so it will feel cool to wear silk clothes in the hot summer. Since silk is a porous material, it is a poor conductor of heat and has good thermal insulation properties, so it is suitable for making winter clothing. See Table 2 for the moisture absorption comparison between silk and other main natural fibers.

Table 2. Moisture absorption rate of mulberry silk, wool and cotton under standard atmospheric pressure

Moisture absorption rate/%
Mulberry Silk 11.0
Wool 16.0
Cotton 8.5

3. Lightfastness

The silk has poor resistance to sunlight. After absorbing the ultraviolet rays in the sunlight, the fiber becomes brittle due to the decrease of the intermolecular binding force, and the strength decreases. Silk is prone to yellowing after being irradiated by ultraviolet rays, and the yellowing degree of tussah silk is more serious than that of mulberry silk. Therefore, silk and silk fabrics cannot be exposed to sunlight after soaking, and can only be dried or dried in the shade. Avoid sunlight when storing silk fabrics. See Table 3.

Table 3. The effect of sunlight on the breaking strength and breaking elongation of mulberry silk and tussah silk

Remaining value/%
10 days in the sun 20 days in the sun 40 days in the sun 60 days of sun exposure
Breaking strength Mulberry Silk 76 55 27 10
Tussah Silk 80 65 34 23
Elongation at break Mulberry Silk 80 50 8 5
Tussah Silk 68 71 25 10

4. Water resistance, acid and alkali resistance

The alkali resistance of silk is much lower than that of cellulose fibers such as cotton and hemp. Silk fibroin can undergo different degrees of hydrolysis in lye. Although the effect of acid on silk is not as severe as that of alkali, it will also increase with the increase of temperature and concentration. In varying degrees, the silk swells and dissolves. The influence of acid and alkali on the performance of silk is shown in Table 4.

Table 4. Comparison of acid and alkali resistance of cotton, hemp and silk

Sulfuric acid

95 %〜98 %

Hydrochloric acid

36 %-38 %

Nitric acid

65 %-68 %

Sodium hydroxide

30 %

Sodium hypochlorite

3.6-5.0 Cl2

(24-30) ℃ Boil (24-30)℃ Boil (24-30) ℃ Boil (24-30) ℃ Boil (24-30) ℃ Boil
Cotton S S0 I P I S0 I I P S
Hemp S S0 I P I S0 I I I S
Silk P S0 P S S0 I S0 S S0

Note: S 0 — dissolve immediately; S — dissolve; P — partially dissolve; I — not dissolve; △swelling.

Dissolution time: 5 min at room temperature, boiling 3 min

5. Resistance to dry heat

Silk has strong resistance to dry heat. Silk is a poor conductor of electricity and a good material for electrical insulation. The heat resistance of silk varies with temperature. When the temperature reaches 120℃, the silk gradually loses moisture and does not change significantly; when the temperature reaches 150 ℃, the strength and elongation decrease, and the sericin solidifies and changes color; when the temperature reaches 235 ℃, the silk is scorched and emits a smell similar to burning wool. Therefore, you must control the ironing temperature when ironing silk clothes.

Benefits of Silk

Silk is different from cotton and wool. It does not originate from cells, but the cells secrete liquid silk protein and then spit out by silkworms to form fibers. This gives silkworm ribbons very different characteristics from other natural fibers. Depending on the silkworm species, the cocoon grains, the position of the cocoon layer, the fiber thickness and the cross-sectional shape of the silk, the cross-sectional structure is very different. The silk fiber has a special-shaped cross-section, which is composed of two silk cores with a length of about 1000 ~ 1400m and a width of 12 ~ 20 µm. It is chemically composed of a polymer protein (-NH-RCH-CO-) n with a complex and fine structure. Such a shape and structure give silk an elegant luster, charm, drape, lightness and softness (feel), and dyeability.

In terms of practicality, clothing fabrics and their raw materials require the performance of strength, elasticity, viscoelasticity, impact resistance, flame resistance, sound absorption, wearing stability and other characteristics. At the same time, in terms of hygienic performance, moisture absorption and emission are required. Moisture, breathability, heat preservation, safety (heat resistance, flame resistance), ultraviolet absorption and radiation, and biocompatibility are the basic requirements.

Silk has a high molecular aggregation energy and a suitable degree of crystallization. Therefore, the mechanical properties of silk are excellent, the breaking strength per unit cross-sectional area is comparable to that of steel wire, and it is not inferior to synthetic fibers.

From the strength-extension curve of silk, the breaking energy of silk is large, especially the impact breaking energy is several times that of other fibers.

In the 1980s, silk was re-recognized and evaluated as a fiber for maintaining human health, especially as a clothing fiber for underwear, and its consumption was rapidly expanding.

New research results show that silk fiber has better health properties than cotton and synthetic fibers.

Moisture absorption, moisture release and heat preservation performance

The amount of sweat and water that our body emits is about 1.5 ~ 2L in a day. Underwear must have the characteristics of being able to absorb a large amount of water and grease released by the body, as well as moisture release and ventilation properties that do not make people feel stuffy. Silk has a moisture absorption capacity of 1.3 to 1.5 times its own mass. Not only that, the test also showed that silk releases moisture faster than cotton. The amount of moisture released by cotton cloth in 60 minutes is finished in 40 minutes in silkworm silk. Therefore, when you sweat in the summer, cotton clothes dry slowly and are uncomfortable to stick to your body; while silk clothes quickly get wet, making underwear not easy to get wet, and they don’t feel stuffy, and they are comfortable to wear. Anyone who wears silk underwear knows that the comfortable feeling is unforgettable, and they no longer want to wear other fabrics.

Synthetic fiber clothing does not wrinkle, does not change color, does not need to be ironed, is durable and inexpensive, and looks as beautiful as silk. For consumers, it was once a fascinating clothing material. However, synthetic fibers hardly absorb moisture and cannot well absorb the water and sweat discharged from the body. Human skin feels stuffy with sweat, and it is particularly uncomfortable to wear it in summer. In winter, synthetic fiber clothing has poor thermal insulation, and the body’s heating is easily taken away by the outside world, and the body temperature cannot be adjusted, and it is easy to catch a cold. Secondly, synthetic fibers are easy to store and carry static electricity, which is a disadvantage. Of course, natural fibers such as silk, cotton, and hemp also generate static electricity, but natural fibers are not stored and charged. Static electricity makes fibers and fabrics easy to absorb dust, and microorganisms in the dust are also brought in, which is not hygienic for the skin. Especially for those who wear nylon pantyhose on nylon underwear, the body is covered with double nylon, which is very unhygienic. Moisture and body temperature create an environment where microorganisms can easily multiply, and skin diseases, urethritis or cystitis are prone to occur. Synthetic fiber fabrics are stored, charged, and often discharge, which can damage the skin. In addition, formalin is used as a catalyst in the synthetic fiber production process. Even if the residual formalin in synthetic fibers is small and does not directly irritate the skin, once it enters the human body, it will produce allergic antibodies, and some people will develop allergic symptoms such as measles. In Italy, the law stipulates that infants and young children are not allowed to wear clothes and articles made of synthetic fibers. In this regard, silk is a protein and contains all the amino acids that make up the human body. It is very close to human skin and is undoubtedly the best raw material for underwear.

Hygroscopicity, moisture release, and heat retention are the most important properties of underwear fabric fibers. Silk fiber has good hygroscopicity, moisture release and heat preservation, which is determined by its protein and fiber structure.

Silk fiber is composed of many fine fibers, and there are many gaps between them, so silk has unique porosity and bulkiness. According to the quality calculation, the cross-sectional area of ​​silk per denier should be about 82 µm 2 ; the measured diameter is about 13 µm , so the cross-sectional area per denier is actually about 133 µm 2 . From this, the Porosity within the silk fiber is calculated as: (133-82)/ 133 x 100% =38%.

In silk fabrics, the gap is sometimes as much as 50% ~ 70% due to different weaving methods. Silk is composed of a collection of many non-uniform fine fibers, and the gaps are small but contain a lot of air. The heat conductivity of air is low, so it has good heat preservation.

Elegant luster, dyeability and feel

In today’s human society, the value of clothes is not only considered practical, but also decorative. The ability to express your favorite colors freely and beautifully is a prerequisite for excellent clothing fibers.

The beautiful luster of silk and pearls and ivory together represent the elegant luster. Pearls and ivory are also formed by the accumulation of many thin layers of protein during the growth process. The thickness and cross-sectional morphology of silk fibers are varied, the surface is complicated and the fine structure, and the developed fine fibers complicate the optical phenomenon. Under the light, silk reflects light from different levels on the surface and inside, and complex phenomena such as light absorption, refraction, diffraction, and interference occur at the same time. As the combined effect of these many physical phenomena, it shows a subtle, elegant and beautiful luster like moonlight.

The dyeability of silk is excellent among many fibers. It can fully absorb many kinds of natural or synthetic dyes, and it is easy to dye beautifully and brightly dye delicate parts. This is because the non-crystalline part of the silk has active groups with high affinity for dyes, and has a fine structure that easily accepts dye particles or molecules. Many synthetic fibers are limited by the types of dyes and dyeing methods when they are dyed. Moreover, compared with synthetic fibers, silk has a lower degree of vividness, but it shows a kind of profound, deserted, and elegant.

Silk is composed of 75% ~ 80% silk fibroin and 20% ~ 25% sericin. These sericin parts make the warp and weft yarns excellent in weaving, and also make the refined fabric have a bulky and comfortable feel. Moreover, the different refining procedures and refining degrees of sericin can produce silk fabrics with different characteristics.

Safety performance

Silk fiber is 5%-8% embrittlement at about 100℃, 10%-15% embrittlement at 150℃, and 30% embrittlement at 200℃. Most natural fibers have slow thermal denaturation like silk, while the degree of thermal denaturation of synthetic fibers is 4 to 5 times that of silk.

The burning temperature of silk fiber is 300 ~ 400℃. The burning temperature of synthetic fiber is mostly 200 ~ 260 ℃, it is melting and burning and produces harmful gas. Silk fabric not only has the effect of heat preservation and sound absorption, but also has the effect of preventing fire.

The beriberi can be cured by the silk fiber’s ability to absorb and release ultraviolet rays. It is said that when silk socks are exposed to the sun, silk (especially the tyrosine in silk protein) can absorb ultraviolet rays, and then wear them on the feet. While the silk socks absorb sweat and water discharged from the feet, they slowly release the originally absorbed ultraviolet rays. Kill pathogenic bacteria.

Silk underwear, silk scarves and gloves cover human skin, which not only keeps heat but also prevents ultraviolet rays, is both beautiful and healthy. The Japanese explorer Uemura went on an expedition to the North Pole and once traversed 4000km of the polar region. He wore silk underwear when he crossed the polar regions, and the scarf and gloves he wore were also silk. In other words, Uemura used silk to cover his body when he explored the Arctic. Silk has good moisture absorption, moisture release, heat preservation, UV resistance, warm and soft hand feeling, and affinity with human skin. Uemura fully understands and makes use of this.

Silk has long been used in medical treatment for surgical sutures. As a surgical suture, the material is required to be biocompatible, that is, it will not be treated as a foreign body by the human body to produce a foreign body sensation. The regenerated silk is produced from the silk fibroin solution, and the suture is not only free of foreign body sensation, but also slowly absorbed in the human body. Surgical sutures also require thin and no roughness, good strength, low friction coefficient (smooth) and appropriate Young’s modulus (toughness) to effectively tie knots and so on. The silk fiber has these characteristics.

To sum up, silk fiber is an assembly of complex protein microfibers. Its special physical and chemical structure gives silk excellent luster, color tone, feel, charm and other high-end fabric properties. It is unmatched by other natural fibers and synthetic fibers so far. Therefore, it is known as the “Queen of Fiber” and is still unfailing. At the same time, because of its special physical and chemical structure, silk fiber gives it excellent hygroscopicity, moisture absorption, moisture release, clearance, UV absorption and dispersion, biocompatibility, heat preservation, air absorption, flame retardancy, etc. The safety performance is well-deserved as the “healthy fiber”.

The frictional strength, buckling strength, elongation fatigue, etc. of the fiber are necessary properties for the durability of clothes. Silk is inferior to synthetic fibers at this point, which is related to the developed fine fiber structure of silk. Another weakness of silk is that long-term storage or exposure to sunlight can cause yellowing and embrittlement, which is also determined by its protein structure. We should overcome the shortcomings of silk and carry forward the advantages of silk.

Silk Bedding Wash & Care

Silk fabric is very delicate, so you should pay special attention when washing it. Before washing, soak it in lukewarm water for about 10 minutes. The soaking time should not be too long. Silk fabrics are not alkali resistant, so you should choose a neutral detergent for washing, and the concentration of the washing solution should be slightly lower. When washing, you should knead and wash gently. Do not use too much force. The temperature of the washing liquid should be lukewarm or room temperature. After washing, you should gently squeeze the water and avoid twisting. For jacquard silk fabrics with complex structures, dry cleaning is best. The silk should be dried in a ventilated and shaded place, and should not be exposed to the sun.

Silk Bedding Size Chart

Silk Duvet Cover Silk Flat Sheet Silk Fitted Sheet Silk Bed Skirt
Twin 67″W x 87″L + 2.75″ Twin 66″ x 96″ Twin 39″x75″+15″ Twin 39″x75″+14″
Full 76″W x 87″L + 2.75″ Full 81″ x 96″ Full 54″x75″+15″ Full 54″x75″+14″
Queen 87″W x 90″L + 2.75″ Queen 91″ x 102″ Queen 60″x80″+15″ Queen 60″x80″+14″
King 104″W x 92″L + 2.75″ King 108″ x 102″ King 78″x80″+15″ King 78″x80″+14″
California King 110″W x 96″L + 2.75″ California King 102″ x 110″ California King 72″x84″+15″ California King 72″x84″+14″
Housewife Silk Pillowcase Oxford Silk Pillowcase Silk Blanket Silk Comforter
Standard 20″ x 26″ Standard 20″ x 26″ + 2″ Twin 66″x90″ Twin 67″ x 87″
Queen 20″×30″ Queen 20″×30″ + 2″ Full 80″x90″ Full/Double 76″x87″
King 20″×36″ King 20″×36″ + 2″ Queen 90″x90″ Queen 87″x90″
King 104″x92″
California King 110″x96″

Silk Sheets Colors

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