CN113183569B - Double-layer PVC composite square blanket and production process thereof - Google Patents

Double-layer PVC composite square blanket and production process thereof Download PDF

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Publication number
CN113183569B
CN113183569B CN202110393278.XA CN202110393278A CN113183569B CN 113183569 B CN113183569 B CN 113183569B CN 202110393278 A CN202110393278 A CN 202110393278A CN 113183569 B CN113183569 B CN 113183569B
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layer
double
flame
retardant
woven fabric
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CN113183569A (en
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庄跃进
苏添福
王宝荣
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Nuoao Fujian Environment Protection Household Product Co ltd
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Nuoao Fujian Environment Protection Household Product Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G27/00—Floor fabrics; Fastenings therefor
    • A47G27/02—Carpets; Stair runners; Bedside rugs; Foot mats
    • A47G27/0243—Features of decorative rugs or carpets
    • A47G27/0281—Resisting skidding or creeping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2471/00—Floor coverings
    • B32B2471/02—Carpets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Abstract

The invention provides a double-layer PVC composite square blanket, which comprises a flame-retardant surface layer and an anti-slip bottom layer connected with the flame-retardant surface layer, wherein the anti-slip bottom layer comprises a spun-bonded non-woven fabric layer with a connecting interlayer. According to the double-layer PVC composite square carpet, the combustion of the carpet is effectively prevented through the flame-retardant surface layer, and the whole carpet can be freely spliced through the connecting interlayer of the spun-bonded non-woven fabric layer, so that the practicability is improved. A double-layer PVC composite square blanket production process comprises the following steps: a. mixing a flame-retardant material, a polyester chip and a masterbatch to prepare a flame-retardant chip; b. the flame-retardant slice is matched with a double-layer PVC layer and a double-layer non-woven fabric bottom to prepare a flame-retardant surface layer; c. making the polyester staple fibers into a non-woven fabric bottom layer embryo blanket; d. and combining the flame-retardant surface layer and the non-woven fabric bottom layer embryo blanket to form the double-layer PVC composite square blanket. According to the double-layer PVC composite square carpet production process, square carpets are produced through rapid maturation, and the burning of the carpets is effectively prevented through the flame-retardant surface layer.

Description

Double-layer PVC composite square blanket and production process thereof
Technical Field
The invention relates to the technical field of carpet manufacturing, in particular to a double-layer PVC composite square carpet and a production process thereof.
Background
The carpet is one of traditional art works with long history worldwide, is commonly used in high-grade houses, hotels, stadiums, exhibition halls or vehicles, has the effects of noise reduction, heat insulation and decoration, and has the functions of beautifying the houses, preserving heat and the like when being laid on the ground.
The current flame-retardant blanket is troublesome to manufacture, and the production efficiency is low due to the plurality of steps. In view of this, the present inventors have conducted intensive studies on the above problems, and have produced the present invention.
Disclosure of Invention
The invention aims to provide a novel article containing box which is convenient to carry and store, and the double-layer PVC composite square blanket and the production process thereof do not occupy space.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the double-layer PVC composite square blanket comprises a flame-retardant surface layer and an anti-slip bottom layer connected with the flame-retardant surface layer, wherein the anti-slip bottom layer comprises a spun-bonded non-woven fabric layer with a connecting interlayer.
The flame-retardant surface layer comprises a flame-retardant blanket surface and a positioning layer for fixing the flame-retardant blanket surface.
The locating layer comprises two PVC layers and two non-woven fabric bottom layers, and the two PVC layers and the two non-woven fabric bottom layers are arranged in a staggered mode.
The flame retardant blanket surface comprises a plurality of elbow lines which are formed by matrix arrangement.
The spun-bonded non-woven fabric layer comprises a connecting layer connected with the positioning layer, a connecting interlayer connected with the connecting layer and an anti-skid stable layer connected with the connecting interlayer.
Adjacent spun-bonded non-woven fabrics layers are mutually bonded and connected through a connecting interlayer.
The anti-slip stabilizing layer comprises a fixing layer connected with the connecting interlayer and an anti-slip piece extending downwards along the thickness of the fixing layer.
The anti-skid part comprises a connecting strip and a plurality of anti-skid inclined nails, wherein the connecting strip is integrally formed with the fixing layer, and the anti-skid inclined nails are arranged in a crossed mode along the length direction of the connecting strip and are formed on the connecting strip.
A double-layer PVC composite square blanket production process comprises the following steps:
a. mixing a flame-retardant material, a polyester chip and a masterbatch to prepare a flame-retardant chip;
b. the flame-retardant slice is matched with a double-layer PVC layer and a double-layer non-woven fabric bottom to prepare a flame-retardant surface layer;
c. making the polyester staple fibers into a non-woven fabric bottom layer embryo blanket;
d. and combining the flame-retardant surface layer and the non-woven fabric bottom layer embryo blanket to form the double-layer PVC composite square blanket.
In the step a, a flame-retardant mixture is formed by melting 30-40% of flame-retardant material and 60-70% of polyester chip by mass percent.
The preparation method adopts a melt spinning slicing process, and the spinning slicing process temperature is 220-250 ℃.
The flame-retardant mixture with the mass percentage of 97-98% and the masterbatch with the mass percentage of 2-3% are mixed and melted to form the flame-retardant slice.
Adopting a melt spinning process, wherein the temperature of the spinning process is 260-295 DEG C
In the step b, nylon materials and polyester materials are mixed and fed together with hot-melt materials; the two-component nonwoven blanket is made by a nonwoven needling apparatus.
In the step c, polyester staple fibers are adopted: 6-8 dtex, length: 51/65 mm plus low melting material.
In the step d, the double-component non-woven fabric surface layer, the middle PVC layer and the non-woven fabric bottom layer embryo blanket are bonded through a PVC equipment double-scraping device, and then are plasticized and cooled through an oven, and finally, the double-layer PVC composite square blanket is manufactured through automatic punching.
After the technical scheme is adopted, the double-layer PVC composite square carpet disclosed by the invention can effectively prevent the burning of the carpet through the flame-retardant surface layer, and the whole carpet can be mutually attached and freely spliced through the connecting interlayer of the spun-bonded non-woven fabric layer, so that the practicability is improved.
According to the double-layer PVC composite square carpet production process, square carpets are produced through rapid maturation, and the burning of the carpets is effectively prevented through the flame-retardant surface layer.
Drawings
FIG. 1 is a schematic view of the inventive blanket;
FIG. 2 is a schematic cross-sectional view of a flame retardant facing of the present invention;
FIG. 3 is a schematic cross-sectional view of a spunbonded nonwoven fabric layer of the present invention;
FIG. 4 is a schematic cross-sectional view of the anti-skid stabilization layer of the present invention;
FIG. 5 is an enlarged schematic view of the antiskid member of the present invention.
In the figure:
a flame-retardant surface layer 1, a flame-retardant blanket surface 11, a positioning layer 12, a PVC layer 13 and a non-woven fabric bottom layer 14;
the anti-slip base layer 2, the spun-bonded non-woven fabric layer 21, the connecting layer 22, the connecting interlayer 23, the anti-slip stabilizing layer 24, the fixing layer 25, the anti-slip piece 26, the connecting strip 27 and the anti-slip diagonal nails 28.
Detailed Description
In order to further explain the technical scheme of the invention, the following is explained in detail through specific examples.
The invention relates to a double-layer PVC composite square blanket and a production process thereof, as shown in figures 1-5, the double-layer PVC composite square blanket comprises a flame-retardant surface layer 1 and an anti-slip bottom layer 2 connected with the flame-retardant surface layer 1, wherein the anti-slip bottom layer 2 comprises a spun-bonded non-woven fabric layer 21 with a connecting interlayer 23. The carpet is effectively prevented from burning through the flame-retardant surface layer 1, and the whole carpet can be freely spliced through the connecting interlayer 23 of the spun-bonded non-woven fabric layer 21.
Preferably, flame retardant finish 1 comprises flame retardant carpet face 11 and positioning layer 12 securing flame retardant carpet face 11. The carpet is prevented from slipping by the positioning layer 12 engaging the floor.
Preferably, the positioning layer 12 comprises two PVC layers 13 and two non-woven fabric bottom layers 14, and the two PVC layers 13 are staggered with the two non-woven fabric bottom layers 14. The multi-layer arrangement increases the stability of the positioning layer 12.
Preferably, flame retardant carpet face 11 includes a plurality of bend lines formed in a matrix arrangement. The bend line not only ensures that the carpet is full and elastic and has excellent hand feeling, but also can cover tiny defects, and the carpet surface has a section and a surface and is diffusely reflected, so that the carpet is not easy to generate color bars, and different carpet styles can be formed.
Preferably, the spunbond nonwoven layer 21 includes a tie layer 22 attached to the positioning layer 12, a tie layer 23 attached to the tie layer 22, and a slip resistant stabilizing layer 24 attached to the tie layer 23. The carpet is ensured to stably fit the ground through the anti-slip stable layer 24.
Preferably, adjacent spunbond nonwoven layers 21 are bonded to one another by a bonding interlayer 23. The connecting interlayer 23 is made of silica gel and is mutually adhered, so that the connecting interlayer has adsorption force.
Preferably, the anti-slip stabilizing layer 24 includes a securing layer 25 attached to the attachment interlayer 23, and an anti-slip member 26 extending down the thickness of the securing layer 25. The friction force formed by the support of the anti-slip member 26 on the ground acts as an anti-slip function.
Preferably, the anti-slip member 26 includes a connecting bar 27 integrally formed with the fixing layer 25, and a plurality of anti-slip diagonal nails 28 disposed to cross along the length direction of the connecting bar 27 and formed on the connecting bar 27. Friction against the floor is increased by the crosswise arranged cleats 28.
A double-layer PVC composite square blanket production process comprises the following steps:
a. mixing a flame-retardant material, a polyester chip and a masterbatch to prepare a flame-retardant chip;
b. the flame-retardant slice is matched with a double-layer PVC layer 13 and a double-layer non-woven fabric bottom to prepare a flame-retardant surface layer 1;
c. making the polyester staple fibers into a non-woven fabric bottom layer embryo blanket;
d. and combining the flame-retardant surface layer 1 and the non-woven fabric bottom layer embryo blanket to form a double-layer PVC composite square blanket.
Preferably, in step a, a flame retardant mixture is formed by melting 30-40% by mass of flame retardant material and 60-70% by mass of polyester chip.
Preferably, the melt spinning and slicing process is adopted, and the spinning and slicing process temperature is 220-250 ℃.
Preferably, the flame-retardant mixture accounting for 97-98 percent of the mass percent is mixed with the masterbatch accounting for 2-3 percent of the mass percent to be melted to form the flame-retardant slice.
Preferably, a melt spinning process is adopted, and the temperature of the spinning process is 260-295 DEG C
Preferably, in the step b, nylon materials and polyester materials are mixed and fed together by hot-melting materials; the two-component nonwoven blanket is made by a nonwoven needling apparatus.
Preferably, in step c, polyester staple fibers are used: 6-8 dtex, length: 51/65 mm plus low melting material.
Preferably, in the step d, the two-component non-woven fabric surface layer, the middle PVC layer 13 and the non-woven fabric bottom layer 14 blank blanket are bonded through a PVC equipment double-scraping device, and then are plasticized and cooled through an oven, and finally, the double-layer PVC composite square blanket is manufactured through automatic punching.
The form of the present invention is not limited to the illustrations and examples, and any person who performs a similar idea of the present invention should be regarded as not departing from the scope of the patent of the invention.

Claims (11)

1. The utility model provides a compound square blanket of double-deck PVC, includes fire-retardant surface course and the anti-skidding bottom that is connected with fire-retardant surface course, its characterized in that: the anti-slip bottom layer comprises a spun-bonded non-woven fabric layer with a connecting interlayer; the spun-bonded non-woven fabric layer comprises a connecting layer connected with the positioning layer, a connecting interlayer connected with the connecting layer and an anti-skid stable layer connected with the connecting interlayer; adjacent spun-bonded non-woven fabric layers are mutually bonded and connected through a connecting interlayer, and the connecting interlayer is made of silica gel;
the flame-retardant surface layer comprises a flame-retardant blanket surface and a positioning layer for fixing the flame-retardant blanket surface, wherein the positioning layer comprises two PVC layers and two non-woven fabric bottom layers, and the two PVC layers and the two non-woven fabric bottom layers are arranged in a staggered manner;
the anti-slip stabilizing layer comprises a fixing layer connected with the connecting interlayer and an anti-slip piece extending downwards along the thickness of the fixing layer.
2. A double layer PVC composite carpet tile according to claim 1, wherein: the flame retardant blanket surface comprises a plurality of elbow lines which are formed by matrix arrangement.
3. A double layer PVC composite carpet tile according to claim 2, wherein: the anti-skid part comprises a connecting strip and a plurality of anti-skid inclined nails, wherein the connecting strip is integrally formed with the fixing layer, and the anti-skid inclined nails are arranged in a crossed mode along the length direction of the connecting strip and are formed on the connecting strip.
4. A process for producing a double layer PVC composite carpet tile according to any one of claims 1 to 3, comprising the steps of:
a. mixing a flame-retardant material, a polyester chip and a masterbatch to prepare a flame-retardant chip;
b. the flame-retardant slice is matched with a double-layer PVC layer and a double-layer non-woven fabric bottom to prepare a flame-retardant surface layer;
c. making the polyester staple fibers into a non-woven fabric bottom layer embryo blanket;
d. and combining the flame-retardant surface layer and the non-woven fabric bottom layer embryo blanket to form the double-layer PVC composite square blanket.
5. The process for producing the double-layer PVC composite carpet tile according to claim 4, wherein: in the step a, a flame-retardant mixture is formed by melting 30-40% of flame-retardant material and 60-70% of polyester chip by mass percent.
6. The process for producing the double-layer PVC composite carpet tile according to claim 5, wherein: the preparation method adopts a melt spinning slicing process, and the spinning slicing process temperature is 220-250 ℃.
7. The process for producing the double-layer PVC composite carpet tile according to claim 6, wherein: the flame-retardant mixture with the mass percentage of 97-98% and the masterbatch with the mass percentage of 2-3% are mixed and melted to form the flame-retardant slice.
8. The process for producing the double-layer PVC composite carpet tile according to claim 7, wherein: and adopting a melt spinning process, wherein the temperature of the spinning process is 260-295 ℃.
9. The process for producing the double-layer PVC composite carpet tile according to claim 4, wherein: in the step b, nylon materials and polyester materials are mixed and fed together with hot-melt materials; a bicomponent nonwoven blanket is made by a nonwoven needling apparatus.
10. The process for producing the double-layer PVC composite carpet tile according to claim 4, wherein: in the step c, polyester staple fibers are adopted: 6-8 dtex, length: 51-65 mm, plus a low melting material.
11. The process for producing the double-layer PVC composite carpet tile according to claim 4, wherein: in the step d, the double-component non-woven fabric surface layer, the middle PVC layer and the non-woven fabric bottom layer embryo blanket are bonded through a PVC equipment double-scraping device, and then are plasticized and cooled through an oven, and finally, the double-layer PVC composite square blanket is manufactured through automatic punching.
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