GB2056468A - Forming patterns on sheet materials by grafting - Google Patents
Forming patterns on sheet materials by grafting Download PDFInfo
- Publication number
- GB2056468A GB2056468A GB7926427A GB7926427A GB2056468A GB 2056468 A GB2056468 A GB 2056468A GB 7926427 A GB7926427 A GB 7926427A GB 7926427 A GB7926427 A GB 7926427A GB 2056468 A GB2056468 A GB 2056468A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheet
- high energy
- energy rays
- materials
- grafted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M14/00—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials
- D06M14/18—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation
- D06M14/26—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation on to materials of synthetic origin
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C23/00—Making patterns or designs on fabrics
- D06C23/04—Making patterns or designs on fabrics by shrinking, embossing, moiréing, or crêping
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06Q—DECORATING TEXTILES
- D06Q1/00—Decorating textiles
- D06Q1/08—Decorating textiles by fixation of mechanical effects, e.g. calendering, embossing or Chintz effects, using chemical means
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The present invention provides a process for imparting a structure e.g. visible pattern to sheet-like materials, in which a sheet-like material is irradiated with high energy rays, a monomeric substance is grafted on to the sheet-like material and the sheet- like material is optionally brought into contact with a medium which produces shrinkage, wherein the surface of the sheet-like material is subjected to a differentiated heat treatment before irradiation with high energy rays.
Description
SPECIFICATION
Process for imparting a structure to sheet-like materials
The present invention is concerned with a process for imparting a structure to sheet-like materials, wherein a sheet-like material is irradiated with high energy rays, a monomeric substance is grafted on to the sheet-like material and the sheet-like material is optionally brought into contact with a medium which produces shrinkage.
It is known to emboss knitted fabrics of synthetic fibres (see Wirkerei- und Strickerei Technik, 4, 198--200/1965), the effect resulting from a combined printing and heat treatment.
It is also known to achieve a patterning of a fabric by local shrinkage (see Internat. Textil
Bulletin FarbernVAusrOstung, 3 248/1 970), the shrinkage tendency of material subjected to a differentiated heat treatment hereby being utilised by means of a treatment in a combination of a calender and a full-width washer.
A disadvantage of these known processes is that they do not result in an improvement in the dyeing properties, in the moisture sorption and in the antistatic characteristics, simultaneously with the achievement of an ornamental structure pattern.
It is also known to impart a structure to sheetlike materials by localised grafting of monomeric substances on to the sheet-like material, which, possibly by means of an after-treatment, lead to different shrinkage of the grafted and non-grafted areas of the sheet-like material and hence produce a pattern (see German Democratic Republic
Patent Specifications Nos. 81,83986,086; 86,161; 95,827 and 111,226). These processes have the disadvantage that the antistatic effect can only be achieved by a 2-step process.
It is an object of the present invention to provide by a one-step process, sheet-like materials' which exhibit a structure and which, at the same time, have improved dyeing properties and moisture sorption, as well as an improved antistatic behaviour.
A further object of the present invention is to achieve a one-step process of locally intensified grafting by means of a novel process.
Thus, according to the present invention, there is provided a process for imparting a structure to sheet-like materials, in which a sheet-like material is irradiated with high energy rays, a monomeric substance is grafted on to the sheet-like material and the sheet-like material is optionally brought into contact with a medium which produces shrinkage, wherein the surface of the sheet-like material is subjected to a differentiated heat treatment before irradiation with high energy rays.
It is advantageous to carry out the heat treatment as a heat fixing of the sheet-like material.
The diffusion of a liquid medium into a solid is determined, inter alia, by the structural state of the solid. This state can be modified, either homogeneously or partially, in a controlled manner. If a partial change is effected, the subsequent diffusion of the liquid medium in the solid is correlated with the particular structural state. If the liquid medium is, for example, a substance which can be polymerised by radiochemical methods, a locally quantitatively differentiated polymerisation can occur.
Depending upon the polymerisable substance used, a difference in tension between the more highly grafted and less highly grafted areas already occurs during the polymerisation process, the solid forming a macroscopically visible texture.
This effect is additionally controllable by the magnitude of the difference between the more highly and the less highly grafted areas. If the tension differences are, nevertheless, too slight to cause a macroscopically visible structure, the effect can be intensified by a subsequent chemical reaction on the grafted monomer, the reaction taking place during further textile finishing processes.
It is surprising that a differentiated surface hear treatment prior to irradiation with high energy rays should change the structure in such a way that a pattern effect is produced by the subsequent treatment.
The following Examples are given for the purpose of illustrating the present invention: EXAMPLE 1.
A flat warp-knitted polyamide fabric with a weight of 90 g/m2 is subjected to an embossing calender treatment.
The term embossing-calendering is to be understood to mean that a raised pattern of an embossing roller presses against a substantially non-deformable backing roller. The unfixed flat warp-knitted polyamide fabric is embossed at a temperature of 1 850C. and at a speed of up to 1 5 m/min. The roller pressure is set to 150 p/cm.
The material pretreated in this way is then brought into contact with acrylic acid and irradiated with high energy rays. The acrylic acid used has a concentration of 15% and is at a temperature of 30"C. and the duration of the impregnation is 5 minutes. Irradiation is carried out with an electron accelerator, the energy being 1 MeV and the dose 4 Mrad. The fabric is then rinsed and dried. The product thus obtained has a visible three-dimensional pattern. The pattern of the product can be further intensified by converting the grafted-on acrylic acid into a salt.
Instead of using a knitted fabric, it is possible also to modify a fibre tow.
In addition to the above-described simultaneous method, the pre-irradiation method can also be employed.
EXAMPLE 2.
A linen binding cloth with a weight of 1 25 g/m2 and made of polyamide-S is subjected to a heat pre-treatment as in Example 1. The material pretreated in this way is then brought into contact with acrylic acid and irradiated with high energy rays. The acrylic acid used has a concentration of 10% and is at a temperature of 600C. and the duration of the- impregnation is 3 minutes.
Irradiation is carried out with an electron accelerator, the energy being 600 KeV and the dose 2 Mrad. The fabric is then rinsed and dried.
The product thus obtained has a visible threedimensional pattern.
Claims (4)
1. A process for imparting a structure to sheetlike materials, in which a sheet-like material is irradiated with high energy rays, a monomeric substance is grafted on to the sheet-like material and the sheet-like material is optionally brought into contact with a medium which produces shrinkage, wherein the surface of the sheet-like material is subjected to a differentiated heat treatment before irradiation with high energy rays.
2. A process according to claim 1, wherein a heat fixing is carried out as the heat treatment.
3. A process according to claim 1 for imparting a structure to sheet-like materials, substantially as hereinbefore described and exemplified.
4. Sheet-like materials, whenever produced by the process according to any of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7926427A GB2056468B (en) | 1979-07-30 | 1979-07-30 | Forming patterns on sheet materials by grafting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7926427A GB2056468B (en) | 1979-07-30 | 1979-07-30 | Forming patterns on sheet materials by grafting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2056468A true GB2056468A (en) | 1981-03-18 |
| GB2056468B GB2056468B (en) | 1983-08-10 |
Family
ID=10506854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7926427A Expired GB2056468B (en) | 1979-07-30 | 1979-07-30 | Forming patterns on sheet materials by grafting |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2056468B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19517625A1 (en) * | 1995-05-13 | 1996-11-14 | Budenheim Rud A Oetker Chemie | Laser printing esp. on glass or plastic substrate |
-
1979
- 1979-07-30 GB GB7926427A patent/GB2056468B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19517625A1 (en) * | 1995-05-13 | 1996-11-14 | Budenheim Rud A Oetker Chemie | Laser printing esp. on glass or plastic substrate |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2056468B (en) | 1983-08-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |