Light-absorbing, heating and heat-preserving knitted fabric

Abstract

The utility model provides a light-absorbing, heating and heat-preserving knitted fabric which comprises a surface layer, a middle layer and an inner layer, the surface layer is formed by weaving first heating blended yarns, the middle layer is formed by weaving heating polyester yarns, and the inner layer is formed by weaving all-cotton yarns or second heating blended yarns; the first heating blended yarn and the second heating blended yarn are both composed of heating polyester yarns and cotton fibers, and the heating polyester yarns are composed of polyester fibers and light-absorbing heating materials. The first heating blended yarn, the heating polyester yarn, the all-cotton yarn or the second heating blended yarn are adopted, so that the fabric keeps a good heat preservation effect and is washable; moreover, the middle layer adopts the heating polyester yarns, so that the fabric keeps certain stiffness, and the fabric is washable and tangible; the inner layer is formed by the all-cotton yarns or the second heating blended yarns, so that the fabric has better softness and is more comfortable to wear.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of textile fabric, specifically, relates to a light-absorbing heating thermal insulation knitted fabric. BACKGROUND

[0002] At present, the demand for various functional fabrics is increasing in the market, among which the heating fabric is particularly favored by consumers.

[0003] The prior art with publication number CN206015380U discloses a fabric with heat insulation and light-absorbing heating functions, which comprises a fabric base, a light-absorbing heating layer and a heat insulation layer; the light-absorbing heating layer is dispersed with light-absorbing heating additives and is fixed to the outer layer of the fabric base; the heat insulation layer is dispersed with glass beads and is fixed to the inner layer of the fabric base; the prior art has the following problems: (1) the base layer uses pure cotton fabric, and the fabric has poor shape retention; (2) the heat insulation layer of the fabric uses the dispersion of additives, and the fabric is not washable, and the additives are easy to fall off after multiple uses, which reduces the heating and heat preservation effect. SUMMARY

[0004] Therefore, the utility model aims at providing a light-absorbing heating thermal insulation knitted fabric to solve the problems in the prior art that the base layer uses pure cotton fabric, the fabric has poor shape retention, the heat insulation layer of the fabric uses the dispersion of additives, the fabric is not washable, and the additives are easy to fall off after multiple uses, which reduces the heating and heat preservation effect.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A light-absorbing heating thermal insulation knitted fabric, which comprises a surface layer, an intermediate layer and an inner layer, the surface layer is woven by first heating blended yarn, the intermediate layer is woven by heating polyester filament, and the inner layer is woven by all-cotton yarn or second heating blended yarn.

[0007] The setting uses first heating blended yarn, heating polyester filament, all-cotton yarn or second heating blended yarn to make the fabric maintain good heat preservation effect and be washable; moreover, the intermediate layer uses heating polyester filament to make the fabric maintain a certain stiffness, so that the fabric is washable and has shape; the all-cotton yarn or second heating blended yarn forms the inner layer to make the fabric have good softness and be more comfortable to wear.

[0008] Further, the pattern of the fabric is circulated in nine ways in the following order from bottom to top:

[0009] The organization structure of the first way is needle cylinder float thread organization, needle cylinder float thread organization and needle cylinder tuck stitch in sequence.

[0010] The organization structures of the second, fifth and eighth paths are needle cylinder loop stitch, needle cylinder loop stitch and needle cylinder loop stitch in sequence.

[0011] The organization structures of the third, sixth and ninth paths are needle cylinder small loop stitch, needle cylinder small loop stitch and needle cylinder small loop stitch in sequence.

[0012] The organization structure of the fourth path is needle cylinder float stitch, needle cylinder tuck stitch and needle cylinder float stitch in sequence.

[0013] The organization structure of the seventh path is needle cylinder tuck stitch, needle cylinder float stitch and needle cylinder float stitch in sequence.

[0014] The fabric formed by the knitting structure in the setting is a fleece fabric, which has good heat preservation effect, and the small loop stitch structure of the middle layer makes the middle layer more fluffy and shaped, and the fabric has good heat preservation effect, and the float and tuck stitch structures of the inner layer make the fabric more fluffy and warm.

[0015] Further, the second, fifth and eighth paths are knitted into the surface layer, the third, sixth and ninth paths are knitted into the middle layer, and the fourth and seventh paths are knitted into the inner layer.

[0016] Further, the first heat-generating blended yarn has a fineness of 20-40S.

[0017] The setting controls the fineness of the yarn of the surface layer, so that the fabric has certain air permeability and good wear resistance, and has strong practicability.

[0018] Further, the heat-generating polyester filament has a fineness of 50-150D.

[0019] The setting controls the fineness of the yarn of the middle layer, which not only makes the middle layer more crisp and shaped, but also forms certain gaps in the middle layer, which can accommodate more static air, and the cooperation of the middle layer with the inner layer and the surface layer further improves the warmth of the fabric.

[0020] Further, the all-cotton yarn or the second heat-generating blended yarn has a fineness of 5-12S.

[0021] The setting controls the fineness of the yarn of the inner layer, which improves the softness of the fabric on the basis of maintaining good air permeability, and the yarn has a large specific surface area, which can better absorb air and improve the warmth of the fabric.

[0022] Further, the first heat-generating blended yarn and the second heat-generating blended yarn are both composed of heat-generating polyester filaments and cotton fibers.

[0023] The cotton fiber used in the blended yarn of the arrangement enables the wearer to enjoy good air circulation while keeping warm, avoids excessive stuffiness and discomfort, and also increases the softness of the fabric, improving the comfort of the wearer; the heat-generating polyester filament can endow the fabric with light absorption and heating performance, and can maintain the stability of the fabric, so that the fabric is not easy to deform and can maintain sustained heat retention. The blended yarn has certain shape stability and can adapt to deformation to a certain extent. The fabric made of such a blended yarn has good wrinkle resistance and shape retention, while still being soft and comfortable.

[0024] Further, the heat-generating polyester filament is composed of polyester fiber and light absorption and heating material.

[0025] Further, the light absorption and heating material is nano powder.

[0026] Further, the light absorption and heating material is one of talc, graphene and ceramic powder.

[0027] Further, the tensile strength of the heat-generating polyester filament is 2.1-5.1 cN / dtex, and the elongation at break is 25-45%.

[0028] The arrangement enables the fabric to have good heat retention and be washable while maintaining shape stability.

[0029] Compared with the prior art, the light absorption and heating heat-retaining knitted fabric has the following advantages:

[0030] 1) The first heat-generating blended yarn, heat-generating polyester filament, all-cotton yarn or second heat-generating blended yarn used in the utility model enable the fabric to maintain good heat retention and be washable; moreover, the use of heat-generating polyester filament in the middle layer also enables the fabric to maintain a certain stiffness, so that the fabric is washable and has a shape; the all-cotton yarn or second heat-generating blended yarn forms an inner layer, so that the fabric has good softness and is more comfortable to wear.

[0031] 2) The fabric formed by the knitting structure in the arrangement is a flannel fabric, has good heat retention, and the small loop structure of the middle layer makes the middle layer more fluffy and has a shape, so that the fabric has good heat retention, and the float and tuck stitch structure of the inner layer makes the fabric more fluffy and warm.

[0032] 3) The cotton fiber used in the blended yarn of the utility model enables the wearer to enjoy good air circulation while keeping warm, avoids excessive stuffiness and discomfort, and also increases the softness of the fabric, improving the comfort of the wearer; the heat-generating polyester filament can endow the fabric with light absorption and heating performance, and can maintain the stability of the fabric, so that the fabric is not easy to deform and can maintain sustained heat retention. BRIEF DESCRIPTION OF DRAWINGS

[0033] Fig. 1 It is the structure schematic view of the light-absorbing, heat-generating and heat-preserving knitted fabric of the utility model;

[0034] Fig. 2 It is the knitting structure view of the light-absorbing, heat-generating and heat-preserving knitted fabric of the utility model;

[0035] Fig. 3 It is the knitting arrangement view of the light-absorbing, heat-generating and heat-preserving knitted fabric of the utility model.

[0036] Mark explanation:

[0037] 1 - surface layer, 2 - intermediate layer, 3 - inner layer. Specific implementation

[0038] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings. Example 1

[0039] As Figs. 1-3 Indicated, the utility model relates to a kind of light-absorbing, heat-generating and heat-preserving knitted fabric, the fabric is knitted by single-side circular knitting machine, the needle spacing used is 12~24G, the fabric includes surface layer 1, intermediate layer 2, inner layer 3, the surface layer is knitted by first heat-generating blended yarn, the intermediate layer is knitted by heat-generating polyester filament, the inner layer is knitted by all cotton yarn or second heat-generating blended yarn.

[0040] The cotton fiber in the set blended yarn makes the wearer keep warm while also enjoying good air circulation, avoiding excessive stuffiness and discomfort, and also increasing the softness of the fabric, improving the comfort of the wearer; The heat-generating polyester filament can impart the light-absorbing and heat-generating properties of the fabric, and can maintain the stability of the fabric, so that the fabric is not easily deformed and can maintain sustained heat preservation. The set blended yarn has certain shape stability, can adapt to deformation to some extent, and also has light-absorbing and heat-generating properties. The fabric made of such blended yarn has good wrinkle resistance, shape retention and heat preservation, while still being soft and comfortable.

[0041] Specifically, the pattern of the fabric is nine-way circulation, in the order from bottom to top as follows:

[0042] The organizational structure of the first way is needle cylinder float line organization, needle cylinder float line organization, needle cylinder tuck stitch organization in turn;

[0043] The organizational structure of the second way, the fifth way and the eighth way is needle cylinder loop formation organization, needle cylinder loop formation organization, needle cylinder loop formation organization in turn;

[0044] The organizational structure of the third way, the sixth way and the ninth way is needle cylinder small loop formation organization, needle cylinder small loop formation organization, needle cylinder small loop formation organization in turn;

[0045] The organization structure of the fourth path is needle cylinder float stitch, needle cylinder tuck stitch, and needle cylinder float stitch in turn.

[0046] The organization structure of the seventh path is needle cylinder tuck stitch, needle cylinder float stitch, and needle cylinder float stitch in turn.

[0047] The fabric obtained by the arrangement is a fleece fabric, which is not only fluffy and warm, but also has good shape retention, and is not easy to deform even under external force, and has good shape stability.

[0048] Specifically, the second path, the fifth path, and the eighth path are knitted into a surface layer, the third path, the sixth path, and the ninth path are knitted into an intermediate layer, and the fourth path and the seventh path are knitted into an inner layer.

[0049] Specifically, the first heat-generating blended yarn has a yarn thickness of 20-40S, and preferably, the first heat-generating blended yarn has a yarn thickness of 30S.

[0050] Specifically, the heat-generating polyester filament has a thickness of 50-150D, and the heat-generating polyester filament has an F number of 36-72F, and preferably, the heat-generating polyester filament is 100D / 72F.

[0051] Preferably, the inner layer is knitted from a second heat-generating blended yarn, and the second heat-generating blended yarn has a yarn thickness of 10S.

[0052] Preferably, the first heat-generating blended yarn and the second heat-generating blended yarn have the same composition.

[0053] Specifically, the first heat-generating blended yarn is composed of cotton fiber and heat-generating polyester filament, and according to the weight ratio, cotton fiber: heat-generating polyester filament = 20-70:80-30, and preferably, cotton fiber: heat-generating polyester filament = 60:40, and the heat-generating polyester filament is composed of polyester fiber and light-absorbing heat-generating material, and according to the weight ratio, polyester fiber: light-absorbing heat-generating material = 97-99.5:3-0.5. Preferably, polyester fiber: light-absorbing heat-generating material = 98:2.

[0054] In this arrangement, by controlling the weight ratio of cotton fiber and heat-generating polyester filament, the balance of softness, fluffiness, shape retention, and warmth of the fabric is maintained.

[0055] Specifically, the preparation process of the first heat-generating blended yarn or the second heat-generating blended yarn is as follows:

[0056] Step one: add light-absorbing heat-generating material to the polyester fiber and mix to obtain a first mixture, and melt the first mixture to obtain a primary fiber; wherein the temperature of the melt spinning is 150-260℃.

[0057] Step two: the primary fiber is stretched, heat set, washed and dried to obtain the heat-generating polyester yarn;

[0058] Specifically, the tensile strength of the heat-generating polyester yarn is 2.1-5.1 cN / dtex, and the elongation at break is 25-45%.

[0059] Specifically, the heat setting temperature is 100-200℃, and the drying temperature is 80-105℃.

[0060] Step three: the heat-generating polyester yarn is cut into 3-4 cm and blended with cotton fibers to obtain a first heat-generating blended yarn or a second heat-generating blended yarn.

[0061] Specifically, the light-absorbing heat-generating material is a nano powder, and the light-absorbing heat-generating material is one of alumina, graphene, and ceramic powder. Preferably, the light-absorbing heat-generating material is ceramic powder.

[0062] Preferably, the inner layer is woven from the second heat-generating cotton yarn, and the yarn count of the second heat-generating cotton yarn is 10S.

[0063] Specifically, the coil length of the second, fifth, and eighth wiring is 19-23 cm / 50 needles, the coil length of the third, sixth, and ninth wiring is 14-18 cm / 50 needles, and the coil length of the first, fourth, and seventh wiring is 8-12 cm / 50 needles. Preferably, the coil length of the second, fifth, and eighth wiring is 21 cm / 50 needles, the coil length of the third, sixth, and ninth wiring is 15 cm / 50 needles, and the coil length of the first, fourth, and seventh wiring is 9 cm / 50 needles.

[0064] This setting further improves the loftiness of the fabric and improves the warmth of the fabric.

[0065] Specifically, the fabric has a grammage of 250-350 g / m2. Example 2

[0066] The present embodiment provides a preparation method of a light-absorbing heat-generating thermal insulation knitted fabric, comprising the following steps:

[0067] S1, Yarn preparation; the preferred yarn in Example 1 is used.

[0068] S2, Knitting; the knitting structure of Example 1 is used;

[0069] S3, Pretreatment;

[0070] Specifically, the specific step of the pre-treatment is to perform heat setting treatment on the woven fabric, the heat setting treatment temperature is 155-165°C, the time is 1-2min, preferably 160°C, and the time is 1.5min. The heat setting treatment avoids the collapse of the surface layer, the middle layer and the inner layer, improves the stability of the fabric, is beneficial to dyeing, and at the same time avoids the problem of reducing the heat preservation performance of the fabric caused by fiber damage due to too high temperature.

[0071] S4, dyeing treatment;

[0072] Specifically, the pre-treated fabric is immersed in a dyeing solution with a bath ratio of 1:10, the dispersion dye formula is 2.5-3% of dye, 2-3g / L of leveling agent, 1.5-3g / L of chelating dispersant, 3-5g / L of sodium acetate, 2-2.5g / L of anti-wrinkle agent and HAc (pH 4.5-5), and the fabric is dyed by stepwise temperature control. After dyeing, the fabric is washed, dehydrated and dried.

[0073] Specifically, the stepwise temperature control is as follows: from room temperature to 50°C at a rate of 0.5°C / min, holding for 15min, then continuing to increase the temperature to 70°C at a rate of 0.5°C / min, holding for 40-50min, then continuing to increase the temperature to 120°C at a rate of 0.5°C / min, holding for 40-50min, and then decreasing the temperature to 70°C at a rate of 0.85°C / min.

[0074] The stepwise temperature control improves the dyeing effect of the fabric.

[0075] S5, finishing:

[0076] S51, soft finishing;

[0077] Specifically, the dyed fabric is immersed in a softening liquid for finishing according to a bath ratio of 1:10, and the softening liquid uses the finishing agent in Example 1 of CN109208335B. This setting improves the softness of the fabric and is more beneficial to the pulling of the fabric.

[0078] S52, drying;

[0079] Specifically, the drying temperature is 80-120°C, and the drying time is 2-4min. Preferably, the drying temperature is 100°C, and the drying time is 4min. This setting maintains the stability of the fabric during the pulling process and improves the pulling effect.

[0080] S53, pulling treatment;

[0081] Specifically, a double-action raising machine is adopted, and the raising cylinder is respectively provided with two kinds of needle rollers in the same direction and opposite direction, which are arranged in sequence and at intervals. The needle roller in the same direction is the same as the fabric movement direction, and plays a role of raising the fabric. The needle roller in the opposite direction is opposite to the fabric movement direction, and plays a role of pulling the fabric. Different raising and pulling effects can be achieved by respectively adjusting the speed of the fabric or the speed of the needle rollers in the same direction and opposite direction. The fabric is pulled for 2-3 times on the front side and 3-4 times on the back side. Preferably, the fabric is pulled for 2 times on the front side and 3 times on the back side.

[0082] The setting forms a layer of fine fluff on the surface of the fabric, improves the loftiness of the fabric, and thus increases the softness and warmth of the fabric.

[0083] S54, setting treatment;

[0084] Specifically, the setting temperature is 150-160℃, the overfeed is 10-20%, and the speed is 15-35m / min. Preferably, the setting temperature is 155℃, the overfeed is 15%, and the speed is 20m / min.

[0085] The setting maintains the stability of the fabric during the shearing treatment, and improves the shearing effect.

[0086] S55, shearing treatment;

[0087] Specifically, the cloth speed of the shearing treatment is 5-15m / min, and the knife speed is 800-1000RPM. Preferably, the cloth speed is 10m / min, and the knife speed is 900RPM.

[0088] S56, re-setting treatment.

[0089] Specifically, the re-setting temperature is 130-150℃, the overfeed is 15-30%, and the speed is 15-35m / min. Preferably, the re-setting temperature is 140℃, the overfeed is 20%, and the speed is 25m / min.

[0090] Comparative Example 1

[0091] Cotton standard lining specified in GB / T 7568.2.

[0092] The light absorption and heat generation performance of the fabric of Example 2 and Comparative Example 1 was tested after 30 times of washing. The test method is T / GDBX 012-2019 Appendix B. The temperature rise value is calculated as the temperature at the 20th minute minus the initial temperature. The temperature difference at the 20th minute is the temperature of the test sample at the 20th minute minus the temperature of the sample of Comparative Example 1 at the 20th minute. The test results are shown in Table 1 below.

[0093]

[0094] It can be concluded from the above table 1 that the fabric still maintains a good heat preservation rate after 30 times of washing and light absorption and heat generation performance test, so it can be known that the first heat generating blended yarn is woven into the surface layer, the heat generating polyester yarn is woven into the middle layer, and the second heat generating blended yarn is woven into the inner layer, and the woven structure and the preparation process of the fabric are matched, so that the fabric maintains a good heat preservation effect and is washable. Moreover, the middle layer adopts the heat generating polyester yarn, so that the fabric maintains a certain stiffness, so that the fabric is washable and has a shape.

[0095] Although the utility model discloses as above, the utility model is not limited to this. Any person skilled in the art, without departing from the spirit and scope of the utility model, can make various changes and modifications, therefore the protection scope of the utility model should be the range defined by the claims.

Claims

1. A light-absorbing heat-generating thermal knit fabric, characterized by, The fabric comprises a surface layer, a middle layer and an inner layer, the surface layer is woven by first heat-generating blended yarn, the middle layer is woven by heat-generating polyester yarn, and the inner layer is woven by all-cotton yarn or second heat-generating blended yarn.

2. The facing material of claim 1, wherein, The pattern of the fabric is circulated in nine ways, and the order from bottom to top is as follows: The structure of the first way is needle cylinder float thread organization, needle cylinder float thread organization, and needle cylinder tuck stitch organization in turn; The structure of the second way, the fifth way and the eighth way is needle cylinder loop organization, needle cylinder loop organization and needle cylinder loop organization in turn; The structure of the third way, the sixth way and the ninth way is needle cylinder small loop organization, needle cylinder small loop organization and needle cylinder small loop organization in turn; The structure of the fourth way is needle cylinder float thread organization, needle cylinder tuck stitch organization and needle cylinder float thread organization in turn; The structure of the seventh way is needle cylinder tuck stitch organization, needle cylinder float thread organization and needle cylinder float thread organization in turn.

3. The facing material of claim 2, wherein, The second way, the fifth way and the eighth way are woven into the surface layer, the third way, the sixth way and the ninth way are woven into the middle layer, and the fourth way and the seventh way are woven into the inner layer.

4. The facing material of claim 1, wherein, The thickness of the first heat-generating blended yarn is 20-40S.

5. The facing material of claim 1, wherein, The thickness of the heat-generating polyester yarn is 50-150D.

6. The facing material of claim 1, wherein, The thickness of the all-cotton yarn or the second heat-generating blended yarn is 5-12S.

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