DE1511398B1 - Method of manufacturing writing tips or liquid-absorbing wicks - Google Patents

Description

I 511 398

- ■■■■ 1; 2

The invention relates to a method for using water as a solvent. A scattering one

Manufacture of writing tips or liquid-quality of the manufactured wicks can thus easily

absorbing wicks for quick drying or preventing, and it's easy to find the conditions

aqueous ink, in which a strand of syn- the dipping treatment or soaking is pre-

dipping synthetic fibers into a synthetic resin solution, giving and maintaining 5 and thus the amount of fibers

then presses it to the desired cross-sectional shape per unit cross-sectional area as well as the synthetic resin

and cut into pieces of suitable length. amount to be determined in advance.

Technology has endeavored to overcome the disadvantages soft, not a firm nib and thus the proper method consists in the fact that one no thin-line, exact writing or drawing io solution by successive addition of to avoid permitting felt-tip pens. In this one an accelerator, an activator and In connection with a process has become known water to thermosetting resin alone or jointly- (French Patent 1418 087), in which one forms sam with thermoplastic resin as a paste, many irregularly arranged fibers due to synthetic in the steam-pretreated fiber strand resin binds together, processed into wicks 15 soaks and the temperature is adjusted during drying and it cuts so that it increases a pointed front and back. The solution thus obtained is a Have the required shape and consistently maintain satisfactory penetration of the steam and at the same time ensure a good flow of ink on the fiber strand; with the gradually increasing possible th temperature evaporates almost all of the liquid entrained from the pasty solution when working according to this known method, however, there are still considerable difficulties and the resin remaining between the fibers one, which is based on the fact that the fibers, the raw- connects the fibers with simultaneous formation materials of a certain thickness are in one of cavities in which the ink between the must be twisted. As a result the fibers pass through it.

Twisting results in different clamping 25 An exemplary embodiment of the invention results

voltages obtained on the surface of each of the fibers from the following description and drawing,

to run. Show during or after a later heat treatment

ment then pull the fibers irregularly to- Fig. 1 and 2 front and side views of

together, and the entirety of the fibers begins, writing tips or liquid-absorbing wicks to rotate due to the tension or 30 different cross-sectional shapes in enlarged

to bend. Scale,

According to the invention, the known FIG. 3 is now a section of the writing tip

The method is further developed in that one or the wick on a further enlarged scale,

synthetic fibers before being immersed in FIG. 4 shows a cross section through the writing tip Resin solution subjected to steam treatment. 35 or the wick,

The steam treatment results in a slight- F i g. 5 schematically the manufacturing device,

tere control of the various tensions in Fig. 6 a longitudinal section through the manufacturing

the fibers; when placed in a steam breathing apparatus,

Sphere of given temperature pulls the fiber F i g. 7 shows a horizontal section through the leading strand together, and the fiber population takes 40 direction as shown in FIG. 6,

a uniform characteristic. The whole of Fig. 8 shows a cross section through the device Bundle begins to operate in an identical manner, along line X-X of Figures 6 and 7 and there is no deformation while FIG. 9 is an oblique view of a later one, for example Machining or deformations can be turned nozzle.

easily mastered. In addition, fiber strands consisting of soft fibers are made into the shape and their bulk is reduced by means of 45 "synthetic fibers, consisting of continuous threads or steam treatment, so that the wicking wicks B are transferred to a writing tip A or a liquid absorber during the subsequent resin treatment are to be solution are rapidly and homogeneously in the fiber strand single tension-free and flexible made, and their Baudringt. the additional use of a 50 schigkeit is reduced by passing it through an activating agent, this penetration steam box C can be from about 95 ° C The invention makes it possible to use a fiber strand steamed in this way to insert pens that are loaded through a chamber D, which had a paste , in terms of writing ability t contains very 55-shaped solution of a synthetic resin d , of good quality with firm nibs and good directed, being sufficiently penetrated by the solution through-ink permeability in easier and cheaper; then it is mass-produced. Ejected nozzle E of a certain cross-sectional shape;

The importance of the deformation resistance thereby becomes the strand to a rod of the same

Wicks during manufacture results in quite a 60 shape like the nozzle E is shaped, and at the same time is

especially if the stick shape is preferred per se, the penetrated paste liquid d in certain

worth squeezing out simply by pressing through quantity,

a nozzle is made. This rod-shaped material is suitable in pieces.

Another advantage in making it is dividing it neter length and then drying it

hardened by the use of an aqueous resin at heat. This gives you the

Resin solution, as it is easy with this to increase the density of the liquid-absorbing wick B.

to keep it at a given value without having to sharpen a section of the rod

changes significantly during the treatment, as the material is shaped to a certain shape with a grinding

machine you then get the nib A (Fig. 1).

The writing tip A or the liquid-absorbing wick B produced in the manner described has cavities 2, through which the ink is passed, between the longitudinally arranged fibers; the dried resin solution provides the bond between the fibers.

The Dampfbehandlungsbox C is continuously fed by a Einströmstutzen 3 with steam of about 95 ⁰ C. The synthetic resin solution chamber D connected to the steam box C contains the paste-like solution d prepared with the addition of an accelerator, activator, water, etc., wherein either the resin alone or together with a solvent-like thermoplastic resin liquid is thermoset. The fiber strand runs through this chamber D. Meanwhile, the temperature, amount of liquid and concentration of solution d should remain constant, which penetrates quickly and thoroughly between the fibers.

The tubular nozzle? Depending on the desired shape and size of the rod, it is interchangeably arranged on a guide channel 4 adjacent to the solution chamber D and forms the fiber strand that comes from the solution chamber D into rod-shaped material.

For example, if the in FIGS. 6 to 8 shown round nozzle E through a square nozzle E, as in F i g. 9, replaced, the fiber strand is formed into a rod corresponding to this nozzle (Fig. Ib and 2b).

The one from the fiber strand while it is being passed through the nozzle? squeezed out excess Solution can be recovered via a liquid line 5.

The solution is pressed out to about 70 or more percent of the pressed fibers, the fiber rod placed on a plate with a straw structure and dried in a drying device.

After sufficiently drying with slowly raising the temperature from about 30 to 5O ⁰ C, the rod-shaped material is solidified by the heat treatment and is then cured at about 130 to 16O ⁰ C.

Parts

Melamine resin or urea resin 100

Acrylic ester resin or vinyl acetate resin 10

Accelerator 5 to 10

Activating agent 1.5

Water 350

While passing through the solution chamber D , the fibers are sufficiently soaked with the solution liquid, and then they are shaped into a rod of the desired shape and size through the tubular nozzle E with a square mouth of 3 mm edge length. The solution is squeezed out in a predetermined amount through this nozzle; then the pressed rod is sufficiently dried by slowly heating it in a drying device to 30 to 160 ° C. and then cut into the desired length and pressed into a certain shape, whereby they are either pointed from the beginning or are sharpened by a grinding device.

2. If you have a slim writing tip with a circular cross-section and a diameter of 2 mm for If you want to make small letters, you treat a fiber strand of

if short-grained .. 1.6 g / m to 1.8 g / m

,,,. , ~ If _föden from continuous synthetic fibers \ between 15 000 and

17,000
denier

with steam under the same conditions as in 1 and dipping the fibers in a solution of the following Composition a:

Parts

Epoxy resin 10

Accelerator 0.6 to 1.5

Solvents (ketones) 20

A solution composed as follows can also be used:

Examples

1. The writing tip A and the liquid-absorbing wick i? are shown as follows: When producing a slender writing tip with a square cross-section with a side length of 3 mm, a fiber strand of melamine resin or urea resin ...
Vinyl chloride resin or vinyl acetate resin

accelerator

Activating agent

water

Parts
100

1.5
300

synthetic fibers

if short-grained

about 3.5 g / m

if from continuous threads a total of 45,000 denier

This solution is allowed to penetrate sufficiently into the fibers and then passed through a round, tubular nozzle with a circular mouth of 2 mm in diameter and carries out the finishing treatment in the same manner as in 1.

3. When producing a nib with a square cross-section and a side length of 4 mm becomes a fiber strand of

passed through the steam container C and treated there with steam; then the fibers are immersed in a liquid solution of d constant concentration, temperature and fluidity. This solution has the following composition:

synthetic fibers

if short-grained
about 7 g / m

if from continuous threads 88 000

denier

passed through the ^{steam box heated to about 95 °} C. and treated with steam; then the fibers

Claims (1)

5 - ■ 6 ■■ ■. be soaked in a solution of the following composition, since the ratio between immersed: thermosetting resin and water is 30: 1. Parts The pen produced according to Example 2 has '“A good flexibility, while the liquid-containing Melamine resin or urea resin ..... 20 5 wick according to example 4 in an extremely soft state Acrylic ester resin or vmylacetate resin ... 2. can be held. Accelerator 1 _{The hardness and} elasticity of a product can be Activation agent 0.3 _{by changing the} ratio between heat and Water 77 hardening and thermoplastic resin change This solution is allowed to sufficiently penetrate the fibers 10 as well as that present in the paste liquid penetration. Then the fibers become a rod of thermoplastic resin and water. The bigger that the desired cross-section and size by the volume of the thermosetting resin, the harder tubular nozzle E with square mouth of is the product; the larger the volume of the thermo- 4 mm edge length pressed, whereby the plastic resin or water is through this nozzle, the softer the paste liquid to a certain degree 15 and more elastic is the product, is squeezed. This shaped rod then becomes the touch strength and body strength of the sufficient by heating to about 30 to 50 ° C writing tip depends on the denier of the strand dried and then by heat treatment of synthetic fiber and its formation as from hardens, cut to the desired length and made into the continuous filaments or from unaligned short fibers corresponding shape pressed or consisting of 20 at the top. sharpened with a grinding device. Patent claims: A writing tip produced in this way has a sufficient flexibility. 1. Method of making nibs The resin or liquid-absorbing wicks used for this paste liquid for quickly can consist of a thermosetting resin alone, dry or aqueous ink, where you can get one which a hardener, an activating agent, water strand of synthetic fibers in a plastic, etc. be admitted. resin solution, then dipping it to the desired one 4. For making a slender, liquid cross-sectional shape and presses into pieces more suitable receiving wick divided by a square transverse length, marked with ch, Cut with a side length of 5 mm, a fiber strand is made from 30 that the synthetic fibers are cut before shortening synthetic fibers, 6.5 to 8.5 g / m, submerged in the synthetic resin solution of a steam equivalent Condition as in case 1 after the steam treatment. treatment in a liquid of the following 2, method according to claim 1, characterized in that soaked composition: shows that the fibers are soaked in the solution 35 ■ gives way to pressing them through a nozzle ^{Parts of the} given cross-section can pass, then through Melamine resin or urea resin 100 drying hardens and brings it into shape. Vinyl chloride resin or vinyl acetate resin 5 3. Process according to Claim 1 or 2, characterized in that an accelerator ...... 8 is used in that an aqueous synthetic resin activating agent ........ 15 '*> solution is used. Water 3000 4. The method according to claim 2 and 3, characterized characterized in that the solution is After the liquid has sufficiently penetrated the fibers successive addition of an accelerator is this through a tubular niger, an activating agent and water to it Nozzle with a square mouth of 5 mm 45 thermosetting resin alone or together with Edge-to-edge, dried and paste-formed onto the same thermoplastic resin as it is Way hardened as in case 1 and finally adapted to the fiber strand pretreated in the steam Cut to length, softens and the temperature increases during drying. This liquid absorbing wick can be extremely and increased. 1 sheet of drawings