CS206816B1 - Textile fabric,especially for book binding and emery cloth purposes,and method of manufacturing same - Google Patents

Description

The invention relates to a fabric which is particularly suitable for bookbinding and emery purposes, comprises fibers having different thermal stability, produced by a weaving or weaving technique, and also to a process for its production.

; Bookbinding and emery cloths are commonly made from cotton or viscose fabrics. Nonwoven fabrics such as interweaves, in particular intertwined with a longitudinally inserted yarn assembly through a basic fiber sheet and intertwined with binder yarns produced in accordance with U.S. Pat. A. O. No. 190,688.

The main purpose of textile treatment of emery and bookbinding textiles is to achieve impermeability to glue solutions when applied in the respective industry. The treatment of the emery cloths is carried out two or three times by repeatedly applying starch-glue coating pastes, optionally prior to quenching with a starch solution and drying on a drying frame. In the case of fabrics intended for bookbinding cloths, it is also necessary to prevent minimal leakage of the adhesive, for visual and aesthetic reasons, so that three or more starch-paste coatings are necessary depending on the type of fabric. A more productive paper lamination of the fabric has also proven to be successful and has been introduced either as a double-layer 206816, i.e. by means of a polyethylene layer which is formed on one side of the fabric in a selected manner layers. Usually, prior to lamination, the fabric is framed to a precise width, optionally with a concomitant undercoating method known in the art.

The method of fabric treatment is considerably shortened and advantageous in the emery and bookbinding fabrics of the invention made by weaving or interlacing, wherein at least one of the structural components of the fabric comprises fibers having a melting point of 70 to 150 ° C, such as polyethylene fibers , polyvinyl chloride, polypropylene, so that the total fiber content of the fabric is 5 to 38% by weight. Instead of or in addition to these fibers, the fabric contains 2 to 25% of its total weight after drying the low-melting polymers having a melting point of 60 to 150 ° C, for example polymers based on polyethylene, polybutadiene and copolymers thereof, polyvinyl acetate, acrylate and the like. In addition, the fabric is provided on one side with a paper thickness of 0.03 to 0.1 mm or paper with a one-sided coating of the thermoplastic layer in an amount of 15 to 0.1 mm.

206816 ______ g / m ² . Instead of laminating with paper, the fabric can be coated with a starch, glue or even paraffin based coating and auxiliary additives.

In the case of a woven fabric, it forms a structural component. In the case of interwoven I, the nonwoven fabric forming components are a planar and fibrous formation, an interlining warp and a binding material.

The low-melting fibers in the fabric comprise, for example '. polyethylene, polyvinyl chloride fibers, poles. propylene and the like. Slurry applied low the meltable polymer is, for example, pole-based; ethylene, polybutadiene and copolymers thereof, polyvinyl acetate, acrylate, polyacrylonitrile, polyvinyl chloride and the like. At the same time, the polymer can also be advantageously used for sizing the warp of the non-woven fabric as a binder, allowing the nonwoven web to be formed in the nonwoven fabric _; of textiles.

'The essence of the method for producing textile for bookbinding and emery purposes is that during its manufacture at least one component of the textile, optionally containing fibers of different thermal stability, is applied with 3 to 45% of the total weight of the low-melting polymer fabric based on polyethylene, polybutadiene and its copolymers, polyvinyl acetate, acrylate and the like, whereupon the fabric is calendered at a temperature of 120 to 200 ° C, a speed of 5 to 28 m / min, a pressure of 3 to 8 MPa and a coating based on 80 to 100 g / kg of starch. up to 20 g / kg of glue and optionally 50 ^: 130 g / kg of paraffin and 2 to 120 g / kg of auxiliary ¹ additives. As adjuvants, kaolin, finely ground limestone, borax, soap, salicylic acid, carboxymethylcellulose, industrial salt, wetting and dispersing agents, pigment dyes and the like are used. Alternatively, instead of coating with a coating, lamination of the fabric with a thin paper or paper with a one-sided coating of the thermoplastic layer can be applied at a temperature of 150 to 200 ° C, a pressure of 3 to 7 MPa and a speed of 8 to 25 m / min. It is also possible to laminate with a thin-film paper or a thermoplastic film-coated foil on one side, without calendering the fabric, but only by lamination prior to lamination followed by drying. Kloc dyeing followed by drying can also be performed prior to calendering, followed by paste coating or lamination with a thin paper or thermoplastic-coated paper. *

In some cases, it is advantageous for a fabric comprising fibers with a lower melting distance to omit the deposition of a low-melting polymer on a forming component or fabric components and only laminate with thin paper or thermoplastic coated paper after prior staining with sequential drying. It is also possible to achieve the same results for a fabric on which paste is applied after calendering or laminated with thin paper or thermoplastic coated paper after calendering.

The treatment of the fabrics according to the invention consists in achieving a high filling and flattening of the fabric as well as the interconnection of the individual structural components; ponent fabrics by calendering fabrics zá! temperature conditions adapted to the softening temperature of the fibers or polymer contained in the fabric. :

This is followed by coating with the starch coating of said composition, the result of which is:

; filling and flattening by calendering number of coatings: required for sufficient fabric impermeability. it is preferably reduced by 1 to ¹ relative to the glue solutions. 3 coatings, or they can be omitted altogether, for example in textiles for emery products in use. a high content of low-melting fibers or low-melting polymer. This technology makes it possible to make more productive use of the coating technique in the bookbinding process as a result of a significant reduction in the number of coatings.

It is also used in the fabric of low melting fibers or low-melting polymers to laminate the fabric under heat and pressure.

] Laminating is performed either with thin paper or even with double-layer foil, paper and thermoplastic.

! An essential advantage of laminating with thin paper is | Enabling productive single-phase treatment of bookbinding textiles using laminating technology without the use of special film. In a method of laminating with paper; with a one-sided thermoplastic coating, a much stronger bond between the paper and the fabric is also achieved and at the same time an interconnection is achieved; Even the individual forming components of the fabric, which also makes it possible, for example, to increase the fabric's resistance to ^! loosening of threads during bookbinding compared to the prior art.

In a manufacturing process which utilizes fabric wiping with a starch coating of said composition, as well as in a fabric manufacturing process by laminating with a thin paper or a paper with a thermoplastic coating, the entire process is optionally used as an input operation | For example, the fabrics are framed to the exact width, optionally with simultaneous dyeing of the fabric in the form of drying-cladding.

The composition of textiles, in particular for bookbinding and reconciliation purposes, as well as the methods for their preparation, are further specified in the examples. ' _i . AND

Example 1

Nonwoven fabric intended for bookbinding cloth has the following composition:

Binding silk - VSh or POPh, 53 g / m ²

Inline warp - VS yarn, 32 g / m ²

Non-woven fleece VSS / PVC 70/30, 52 g / m ²

Binding - two-eyed chain

Line density - 130/10 cm

Post density - 60/10 cm.

The fabric is framed in a drying machine in a known manner at a temperature of 115 ° C after continuously preceding flocculation with an aqueous dye solution of Direct Brown 2G at a dose of 10 to 25 g / l, depending on the desired shade. This is followed by lamination on a "Zimmer-Plastic" machine with a thin-film paper of 0.05 mm thickness, or a paper one-sided [polyethylene coated foil in an amount of 30 g / m ² at a pressure of 7 MPa, a temperature of 190 ° C and a speed of 21. m / min. Optionally, lamination with a thin paper is performed by passing through a five-cylinder calender at a temperature of 180 ° C, a pressure of 5 to 6 MPa and a speed of 8 to 10 m / min. '

For. Some of the qualities of the desired bookbinding cloths are sufficient for said calendering itself without the need to laminate the fabric with tissue paper.

Example 2 A plain weave fabric intended to be a substrate; fabric for emery sheets, having the following composition:

Outline - mixture of VSs / PVCs or ba / POPs 65/35, also weight 68 g / m ²

Escape or VSs, 59 g / m ² . her . The fabric is calendered by rolling or friction; j calender at a temperature of 160 to 170 ° C, speed 16 to:

) 25 m / min. and a pressure of 5 MPa. ί i One-sided closing in a known manner follows! bem a paste based on 80 to 100 g / kg of starch, 2 to 20 g / kg of glue, or 50 to 130 g / kg of paraffin, and adjuvants in an amount of 35 g / m ^{2 of} dry matter.

[Example 3

A fabric of the composition of Example 2, wherein, after calendering, lamination is carried out as in Example 1 instead of shrinking.

Example 4

The fabric described in Example 1 is manufactured

Claims (3)

OBJECTIVE 1. Textiles, in particular for bookbinding and emery purposes, made of structural components, such as weft and warp, embedded warp. A fibrous web, a binder such as silk, yarn and the like, made by weaving or interweaving a yarn assembly deposited on a basic fibrous web, wherein at least one of the structural components of the fabric comprises 5 to 38% by weight of fibers at a temperature 70 to 150 ° C, for example polyethylene, polyvinyl chloride, polypropylene fibers or contains 2 to 25% of the total weight of the fabric, a polymer having a melting point of 60 to 150 ° C, for example based on polyethylene, polybutadiene and copolymers thereof, polyvinyl acetate, acrylate and the fabric is coated on one side with a thickness of 0,03 to 0,1 mm; or. paper with a one-sided coating of a thermoplastic layer, for example of polyethylene, in an amount of 15 to 70 g / m ² or a starch, glue or paraffin based coating and auxiliary additives in a total amount of 20 to 70 g / m ² . 10 g / m ² . ~ ~ [· ~~. . ! 2. I ''. . | Example 6 I In the manufacture of nonwoven fabrics of the following composition: Binding silk - VSh or POPh, 60 g / m ² i Inline warp - VS yarn i Fleece - mixture of VSs / PVCs 35/65, i at the end of production, the fleece is continuously ironed with heated rollers · temperature 140 to 170 ° C pressure of 1.2 to 3.5 MPa. For some types of bookbinding and emery textiles, the achieved flattening and non-permeability of the web by ironing is sufficient without further treatment of the fabric. Alternatively, after ironing, the fabric can be wiped as described in Example 2. 60 to 150 ° C based on polyethylene, polybutadiene and copolymers thereof, polyvinyl acetate and acrylate, whereupon the fabric is calendered at a temperature of 120 to 200 ° C, at a speed of 5 to 5 ° C. 28 m / min, a pressure of 3 to 8 MPa and coating with an β-based coating of 80 to 100 g / kg of starch, 2 to 20 g / kg of glue, or 50 to 130 g / kg of paraffin and 2 to 120 g / kg of adjuvants such as kaolin, finely ground limestone, borax, soap, salicylic acid, carboxymethylcellulose, industrial salt, wetting and dispersing agent, pigment dye or only laminated with paper or paper with a one-sided coating of the thermoplastic layer at 150 to 200 ° C , a pressure of 3 to 7 MPa and a velocity of 8 to 25 m / min, whereby prior to calendering or lamination, a collocation with subsequent drying is optionally carried out. 2. A method according to claim 1, wherein the woven or woven fabric is woven or interwoven, characterized in that during its manufacture, at least one component of the fabric, including fibers having different thermal properties, is formed. The webs are applied to the web by dispersions containing a mixture of polymethyl methacrylate and poly (methyl acrylate) in an amount such that after drying, the polymer content of the web is 5% by weight. ; Further processing is the same as in Example 1 or ' ² ' Example 5 i Non-woven fabric, for example, a weave having the composition: i Binding material - VSh or POPh, 40 g / m ² Inline warp - or VS yarn, 28 g / m ² Fleece - VS yarn, 55 g / m ² . i. In the manufacture of this fabric, a mixed aqueous dispersion of polyvinyl acetate and polybutylacrylate is applied to the web so that, after drying, the content of the polymer fleece is 7% by weight. Further processing is the same as in Example 1 or. 3. The method for producing a fabric according to item 2, as defined in claim 1. This means that only lamination with paper or paper with a one-sided thermo-coating is carried out ^. plastic layers after prior staining with a flak, subsequent drying or a calanan; milling with subsequent paste coating or subsequent lamination with paper or thermo-coated plastic film.