CN116476478A - Sandwich filling fiber material and preparation method thereof - Google Patents
Sandwich filling fiber material and preparation method thereof Download PDFInfo
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- CN116476478A CN116476478A CN202310467342.3A CN202310467342A CN116476478A CN 116476478 A CN116476478 A CN 116476478A CN 202310467342 A CN202310467342 A CN 202310467342A CN 116476478 A CN116476478 A CN 116476478A
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- 239000002657 fibrous material Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000000835 fiber Substances 0.000 claims abstract description 297
- 229920000728 polyester Polymers 0.000 claims abstract description 82
- 238000002844 melting Methods 0.000 claims abstract description 60
- 230000008018 melting Effects 0.000 claims abstract description 49
- 238000009960 carding Methods 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 235000009161 Espostoa lanata Nutrition 0.000 claims description 3
- 240000001624 Espostoa lanata Species 0.000 claims description 3
- 229920001410 Microfiber Polymers 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 12
- 229920000742 Cotton Polymers 0.000 abstract description 8
- 239000011229 interlayer Substances 0.000 abstract description 5
- 239000000047 product Substances 0.000 description 10
- 239000002994 raw material Substances 0.000 description 7
- 239000012209 synthetic fiber Substances 0.000 description 7
- 229920002994 synthetic fiber Polymers 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 230000000844 anti-bacterial effect Effects 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 244000144992 flock Species 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 3
- 235000010469 Glycine max Nutrition 0.000 description 2
- 244000068988 Glycine max Species 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/55—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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/04—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the partial melting of at least one 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating 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
- 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
-
- 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
- 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
- B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
- B32B5/265—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer
- B32B5/266—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
-
- 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
- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/559—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
-
- 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
- B32B2262/0253—Polyolefin 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
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/06—Vegetal fibres
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
A sandwich filling fiber material and a preparation method thereof relate to the field of new materials. The interlayer filling fiber material comprises at least two layers of fiber floccules which are stacked up and down and are in a sheet shape, and spherical fiber clusters are paved between two adjacent layers of fiber floccules; the fiber flocculus and the fiber cluster both contain low-melting-point polyester fibers, and the fiber flocculus and the fiber cluster are bonded together through the low-melting-point polyester fibers in a hot melting mode. The invention combines the fiber flocculus and the fiber cluster, so that the product has high stability of the fiber flocculus filling material and high rebound resilience of the pearl cotton material.
Description
Technical Field
The invention relates to the field of new materials, in particular to a filling material of bedding.
Background
Most bedding products use multi-layer lapping flakes as filling materials, and the products of the materials have the problem of low fluffiness rebound resilience, and particularly are difficult to recover the fluffy state after being packed by vacuum compression; some of the materials can use pearl wool as a filling material, the products of the materials have good rebound resilience but poor stability and are easy to move, and the pearl wool is agglomerated to influence the use of the products.
Disclosure of Invention
The present invention aims to provide a sandwich-filled fibrous material to solve the above problems.
The invention also aims to provide a preparation method of the interlayer filling fiber material, so as to prepare the interlayer filling fiber material.
The technical problems solved by the invention can be realized by adopting the following technical scheme:
the sandwich filling fiber material is characterized by comprising at least two layers of fiber floccules which are stacked up and down and are in a sheet shape, and spherical fiber clusters are paved between two adjacent layers of fiber floccules;
the fiber flocculus and the fiber cluster both contain low-melting-point polyester fibers, and the fiber flocculus and the fiber cluster are bonded together through the low-melting-point polyester fibers in a hot melting mode.
Firstly, the invention combines the fiber flocculus and the fiber cluster, so that the product has high stability of the fiber flocculus filling material and high rebound resilience of the pearl cotton material. And secondly, the low-melting-point polyester fiber is creatively introduced, and the fiber flocculus and the fiber clusters are connected together by melting the low-melting-point polyester fiber, so that compared with a suture connection mode, the low-melting-point polyester fiber has the advantages of low manufacturing difficulty, high manufacturing efficiency and multiple and uniform connection points. Thereby further improving the stability and resilience of the article.
A method for preparing a sandwich filling fiber material is characterized in that,
step one, preparing fiber flakes and fiber clusters, wherein the fiber flakes and the fiber clusters both contain low-melting-point polyester fibers,
step two, alternately layering and paving the fiber flakes and the fiber clusters to form a sandwich structure;
thirdly, carrying out heating treatment on the sandwich structure to enable the low-melting-point polyester fibers in the fiber flocculus and the fiber clusters to be hot-melted;
and fourthly, cooling the sandwich structure to obtain the sandwich filling fiber material in which the fiber flocculus and the fiber clusters are bonded together through the low-melting-point polyester fiber in a hot melting way.
The preparation method has the advantages of simple process, low manufacturing difficulty and high manufacturing efficiency.
Detailed Description
The invention is further described in conjunction with the following description in order to make the technical means, the creation features, the achievement of the objects and the effects of the invention easy to understand.
The sandwich filling fiber material comprises at least two layers of fiber floccules which are stacked up and down and are in a sheet shape, and spherical fiber clusters are laid between two adjacent layers of fiber floccules. The fiber flocculus and the fiber cluster both contain low-melting-point polyester fibers, and the fiber flocculus and the fiber cluster are bonded together through the low-melting-point polyester fibers in a hot melt mode.
With respect to fibrous batts
Preferably, the fiber flocculus consists of composite fibers and low-melting-point polyester fibers, wherein the composite fibers are one or more of polyester fibers, soybean fibers, polylactic acid fibers, cellulose fibers and the like. The fineness of the composite fiber is 1D-15D, and the length is 20mm-70mm. The melting point of the low-melting point polyester fiber is 110-180 ℃. The mass percentage of the low-melting point polyester fiber in the fiber flocculus is 5-15%.
With respect to fiber clusters
The fiber cluster consists of low-melting polyester fiber, functional fiber and superfine fiber. The functional fiber preferably contains three-dimensional hollow synthetic fiber, wherein the three-dimensional hollow synthetic fiber comprises at least one of PET fiber, PTT fiber and PP fiber; the fineness of the three-dimensional hollow synthetic fiber is 2D-15D, the length is 20mm-64mm, and the content is 30% -70%. The melting point of the low-melting point polyester fiber is 110-180 ℃. The mass percentage of the low-melting point polyester fiber in the fiber cluster is 5% -15%. The diameter of the fiber cluster is 5mm-18mm.
The preparation method of the interlayer filling fiber material comprises the steps of firstly, preparing fiber flocculus and fiber clusters, wherein the fiber flocculus and the fiber clusters all contain low-melting polyester fibers; step two, alternately layering and paving the fiber flakes and the fiber clusters to form a sandwich structure; thirdly, carrying out heating treatment on the sandwich structure to enable the low-melting-point polyester fibers in the fiber flocculus and the fiber clusters to be hot-melted; and fourthly, cooling the sandwich structure to obtain the sandwich filling fiber material in which the fiber flocculus and the fiber clusters are bonded together through the low-melting-point polyester fiber in a hot melting way.
Example 1
Firstly, selecting a fiber cluster raw material: a low-melting-point polyester fiber with a melting point of 110-130 ℃ and a content of 5%; the functional fiber is a three-dimensional hollow synthetic fiber, the fineness is 3D, the length is 32mm, and the content is 60%; the superfine fiber is superfine polyester fiber with fineness of 0.7D, length of 32mm and content of 35%. The low-melting-point polyester fiber, the three-dimensional hollow synthetic fiber and the superfine polyester fiber are fed into a mixer for uniform mixing according to the mass percentage, and are conveyed to an opener for fully loosening the fiber. The loosened fibers are sent into a pearl cotton machine for preparing fiber clusters, the fibers are formed into balls after being extruded, rubbed and rotated in the pearl cotton machine, and the sizes and the tightness of the ball clusters are adjusted by adjusting the outlet balance weight of the machine, so that the diameters of the fiber clusters are 5-12mm.
Secondly, selecting a fiber flocculus raw material: a low-melting-point polyester fiber with a melting point of 110-130 ℃ and a content of 10%; composite fiber, which consists of 30% three-dimensional 3D polyester fiber (64 mm in length and 3D in fineness) and 60% three-dimensional 7D polyester fiber (64 mm in length and 7D in fineness). The low-melting-point polyester fiber and the composite fiber are fed into a mixer for uniform mixing according to the mass percentage, and are conveyed to an opener for fully loosening the fiber. And (3) feeding the opened fibers into a carding machine, carding by the carding machine, and uniformly paving the fibers into fiber flakes with certain thickness and width by a lapping machine.
Then, cutting the fiber flakes according to the design specification of the product, paving the fiber flakes on the bottom layer of the pillow core die, paving the fiber clusters on the fiber flakes of the bottom layer, and paving another fiber flake on the fiber clusters to form a sandwich structure together.
And finally, feeding the pillow core mould with the sandwich structure into a hot melting device for hot melting shaping, wherein the hot melting temperature is 180 ℃, and cooling to obtain the sandwich filling fiber material formed by bonding the fiber flakes and the fiber clusters together through the hot melting of the low-melting-point polyester fibers.
Example 2
Firstly, selecting a fiber cluster raw material: a low-melting-point polyester fiber with a melting point of 110-130 ℃ and a content of 5%; the functional fiber is a three-dimensional hollow synthetic fiber, the fineness is 3D, the length is 64mm, and the content is 50%; the superfine fiber is far infrared modified polyester fiber with fineness of 0.9D, length of 38mm and content of 45%. The low-melting-point polyester fiber, the three-dimensional hollow synthetic fiber and the far infrared modified polyester fiber are fed into a mixer for uniform mixing according to the mass percentage, and are transmitted to an opener for fully loosening the fibers. The loosened fibers are sent into a pearl cotton machine for preparing fiber clusters, the fibers are formed into balls after being extruded, rubbed and rotated in the pearl cotton machine, and the sizes and the tightness of the ball clusters are adjusted by adjusting the outlet balance weight of the machine, so that the diameters of the fiber clusters are 5-12mm.
Secondly, selecting a fiber flocculus raw material: a low-melting-point polyester fiber with a melting point of 110-130 ℃ and a content of 15%; the composite fiber consists of 30% soybean fiber (length is 51mm, fineness is 1.56D), 45% three-dimensional hollow silicon primary polyester fiber (length is 64mm, fineness is 3D) and 10% two-dimensional 7D ten-hole silicon regenerated polyester fiber (length is 64mm, fineness is 7D). The low-melting-point polyester fiber and the composite fiber are fed into a mixer for uniform mixing according to the mass percentage, and are conveyed to an opener for fully loosening the fiber. And (3) feeding the opened fibers into a carding machine, carding by the carding machine, and uniformly paving the fibers into fiber flakes with certain thickness and width by a lapping machine.
Then, cutting the fiber flakes according to the design specification of the product, paving the fiber flakes on the bottom layer of the pillow core die, paving the fiber clusters on the fiber flakes of the bottom layer, and paving another fiber flake on the fiber clusters to form a sandwich structure together.
And finally, feeding the pillow core mould with the sandwich structure into a hot melting device for hot melting shaping, wherein the hot melting temperature is 180 ℃, and cooling to obtain the sandwich filling fiber material formed by bonding the fiber flakes and the fiber clusters together through the hot melting of the low-melting-point polyester fibers.
Example 3
Firstly, selecting a fiber cluster raw material: a low-melting-point polyester fiber with a melting point of 110-130 ℃ and a content of 10%; the functional fiber is 35 percent of three-dimensional hollow silicon virgin polyester fiber (the length is 64mm and the fineness is 7D) and 30 percent of antibacterial modified polyester fiber (the length is 64mm and the fineness is 3D); the superfine fiber is superfine polyester fiber with fineness of 0.9D, length of 38mm and content of 25%. The low-melting-point polyester fiber, the three-dimensional hollow silicon virgin polyester fiber, the antibacterial modified polyester fiber and the superfine polyester fiber are fed into a mixer for uniform mixing according to the mass percentage, and are conveyed to an opener for full loosening. The loosened fibers are sent into a pearl cotton machine for preparing fiber clusters, the fibers are formed into balls after being extruded, rubbed and rotated in the pearl cotton machine, and the sizes and the tightness of the ball clusters are adjusted by adjusting the outlet balance weight of the machine, so that the diameters of the fiber clusters are 8-15mm.
Secondly, selecting a fiber flocculus raw material: a low-melting-point polyester fiber with a melting point of 110-130 ℃ and a content of 15%; the composite fiber consists of antibacterial three-dimensional hollow polyester fiber (length 64mm, fineness 3D) with 40% and three-dimensional hollow polyester fiber (length 64mm, fineness 7D) with 45%. The low-melting-point polyester fiber and the composite fiber are fed into a mixer for uniform mixing according to the mass percentage, and are conveyed to an opener for fully loosening the fiber. And (3) feeding the opened fibers into a carding machine, carding by the carding machine, and uniformly paving the fibers into fiber flakes with certain thickness and width by a lapping machine.
Then, cutting the fiber flakes according to the design specification of the product, paving the fiber flakes on the bottom layer of the pillow core die, paving the fiber clusters on the fiber flakes of the bottom layer, and paving another fiber flake on the fiber clusters to form a sandwich structure together.
And finally, feeding the pillow core mould with the sandwich structure into a hot melting device for hot melting shaping, wherein the hot melting temperature is 180 ℃, and cooling to obtain the sandwich filling fiber material formed by bonding the fiber flakes and the fiber clusters together through the hot melting of the low-melting-point polyester fibers.
Example 4
Firstly, selecting fiber clusters and fiber flocculus raw materials: a low-melting-point polyester fiber with a melting point of 110-130 ℃ and a content of 10%; 45% of functional fibers are three-dimensional hollow silicon virgin polyester fibers (64 mm in length and 7D in fineness) and 25% of antibacterial modified polyester fibers (64 mm in length and 3D in fineness); the superfine fiber is superfine polyester fiber with fineness of 0.9D, length of 38mm and content of 20%.
The low-melting-point polyester fiber, the three-dimensional hollow silicon virgin polyester fiber, the antibacterial modified polyester fiber and the superfine polyester fiber are fed into a mixer for uniform mixing according to the mass percentage, and are conveyed to an opener for full loosening.
Secondly, the loosened fiber part is sent into a pearl cotton ball machine for preparing fiber clusters, the fibers are extruded, rubbed and rotated in the pearl cotton ball machine for forming balls, and the size and the tightness degree of the ball clusters are adjusted through adjusting the outlet balance weight of the machine, so that the diameter of the fiber clusters is 8-15mm.
And feeding the opened fiber part into a carding machine, carding by the carding machine, and uniformly paving the fiber part into fiber flakes with certain thickness and width by a lapping machine.
Then, cutting the fiber flakes according to the design specification of the product, paving the fiber flakes on the bottom layer of the pillow core die, paving the fiber clusters on the fiber flakes of the bottom layer, and paving another fiber flake on the fiber clusters to form a sandwich structure together.
And finally, feeding the pillow core mould with the sandwich structure into a hot melting device for hot melting shaping, wherein the hot melting temperature is 180 ℃, and cooling to obtain the sandwich filling fiber material formed by bonding the fiber flakes and the fiber clusters together through the hot melting of the low-melting-point polyester fibers.
Product performance comparison
| Example 1 | Example 2 | Example 3 | Example 4 | |
| Cost of manufacture | Lowest minimum | Lower level | Highest to | Higher height |
| Antibacterial property | Without any means for | Without any means for | Preferably | Preferably, it is |
| Stability of | High height | High height | Higher height | Highest to |
| Rebound resilience | Good (good) | Preferably | Preferably, it is | Preferably, it is |
From the comparison of the above tables, it can be seen that the overall performance of the scheme under specific example 4 is the best, and is the preferred scheme.
In the above embodiments, besides heating the core mold to heat the sandwich structure, the following scheme may be adopted: scheme 1: the sandwich structure passes through the gap between the two hot rollers, the primary connection is completed by utilizing the heat transmission and the pressing action of the hot rollers, and then the sandwich structure passes through the high Wen Kongjian and is connected secondarily in a high-temperature space, wherein the temperature in the high-temperature space is not lower than the melting point of the low-melting point polyester fiber. The structure preferably comprises a first rotating roller, a second rotating roller, a first hot roller, a second hot roller and a traction roller, wherein the first rotating roller is wound with a fiber flocculus serving as a bottom layer, the second rotating roller is wound with a fiber flocculus serving as an upper layer, a gap is arranged between the first hot roller and the second hot roller, the fiber flocculus wound on the first rotating roller and the fiber flocculus wound on the second rotating roller pass through the gap under the traction of the traction roller, and the fiber clusters are laid on the fiber flocculus serving as the bottom layer between the first hot rollers. For placing the fiber clusters to roll on the fiber flock, it is preferable that the fiber clusters are placed on the fiber flock as a bottom layer after being soaked with water, or the fiber flock is made into a lattice shape (the mesh aperture of the fiber flock is smaller than the diameter of the fiber clusters). The traction roller is positioned at the rear of the high-temperature space, and the first hot roller and the second hot roller are positioned at the inlet of the high-temperature space or in front of the high-temperature space. When the first heat roller and the second heat roller are positioned in the high-temperature space, the first heat roller and the second heat roller can be made of heat conducting materials without heating elements, and the heat conducting materials are utilized to enable the heat roller and the second heat roller to have higher temperature. The first hot roller, be equipped with inwards sunken on the lateral wall of second hot roller to utilize sunken holding to be spheroidal fibre cluster, avoid the fibre cluster to be flattened at fibre cluster and fibre flocculus hot melt connection in-process, the cooling back that leads to, the fibre cluster receives low melting point polyester fiber's the involvement, influences the condition of resilience. The concave parts on the first hot roller and the second hot roller are opposite to each other.
In the embodiments described above, a low-melting polyester fiber may be laid between two adjacent layers of fiber batts, where the low-melting polyester fiber is preferably laid along the edges of the fiber batts. On the one hand, the low-melting-point polyester fibers laid on the edges of the fiber flakes can limit the movement of the fiber clusters, and avoid the displacement of the fiber clusters in the production process, particularly before hot melt bonding; on the other hand, the low-melting-point polyester fibers laid on the edges of the fiber flakes can improve the thickness uniformity of the edges of the sandwich structure and enable the thickness of the final product to be relatively uniform, so that the situation that the fiber flakes at the edges are supported by fiber clusters without connection is avoided, and the situation that the sandwich structure collapses at the edges after hot melting connection is avoided.
In order to make the connection of the interlayer filling fiber materials more uniform, the pillow core mold rotates in the hot melting mold. Therefore, the flow direction of the molten low-melting-point polyester fiber is more, and the force generated in the rotation process makes the flow force of the molten low-melting-point polyester fiber more, and finally makes the dispersion more uniform. Preferably, the heat fusible pattern rotates along the central axis of the sandwich fill fiber material. The inclined track can be arranged in the hot melting equipment, the supporting legs matched with the track are arranged on the hot melting mould, and after the hot melting mould is placed in the hot melting equipment, the hot melting mould rolls from high to low on the track under the action of gravity, so that the rolling of the hot melting mould is realized.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The sandwich filling fiber material is characterized by comprising at least two layers of fiber floccules which are stacked up and down and are in a sheet shape, and spherical fiber clusters are paved between two adjacent layers of fiber floccules;
the fiber flocculus and the fiber cluster both contain low-melting-point polyester fibers, and the fiber flocculus and the fiber cluster are bonded together through the low-melting-point polyester fibers in a hot melting mode.
2. The sandwich fill fiber material of claim 1 wherein the low melting polyester fiber has a melting point of 110 ℃ to 180 ℃.
3. The sandwich fill fiber material of claim 1, wherein the mass percent of the low melting point polyester fibers in the fiber batt or fiber clusters is 5% -15%.
4. The sandwich fill fiber material of claim 1 wherein the fiber batt is comprised of composite fibers and low melting polyester fibers.
5. The sandwich fill fiber material of claim 1, wherein the fiber clusters are comprised of low melting point polyester fibers, functional fibers, ultra fine fibers.
6. The sandwich fill fiber material of claim 1, wherein the fiber clusters have a diameter size of 5mm to 18mm.
7. A method for preparing a sandwich filling fiber material is characterized in that,
step one, preparing fiber flakes and fiber clusters, wherein the fiber flakes and the fiber clusters both contain low-melting-point polyester fibers,
step two, alternately layering and paving the fiber flakes and the fiber clusters to form a sandwich structure;
thirdly, carrying out heating treatment on the sandwich structure to enable the low-melting-point polyester fibers in the fiber flocculus and the fiber clusters to be hot-melted;
and fourthly, cooling the sandwich structure to obtain the sandwich filling fiber material in which the fiber flocculus and the fiber clusters are bonded together through the low-melting-point polyester fiber in a hot melting way.
8. The method for producing a sandwich-filled fibrous material according to claim 7, characterized in that in step two, fibrous flakes, clusters are laid in a mould; in the third step, the die is placed into a hot melting device for heating, and the heating temperature is higher than the melting point of the low-melting point polyester fiber.
9. The method of making a sandwich fill fiber material of claim 7 wherein in step one, the method of making the fiber clusters is:
step 1, feeding the low-melting polyester fiber, the functional fiber and the superfine fiber into a mixer for uniform mixing, and conveying the mixed fiber to an opener for opening;
and 2, transmitting the opened fibers to a pearl cotton ball machine to prepare spherical fiber clusters.
10. The method of making a sandwich fill fibrous material of claim 7 wherein in step one, the method of making a fibrous batt comprises:
step 1, feeding the composite fiber and the low-melting-point polyester fiber into a mixer for uniform mixing, and conveying the mixed fiber to an opener for opening;
and 2, feeding the opened fibers into a carding machine, carding by the carding machine, and uniformly paving the fibers into fiber flakes with certain thickness and width by a lapping machine.
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| CN202310467342.3A CN116476478A (en) | 2023-04-27 | 2023-04-27 | Sandwich filling fiber material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310467342.3A CN116476478A (en) | 2023-04-27 | 2023-04-27 | Sandwich filling fiber material and preparation method thereof |
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