The come off method of testing of performance of towel washing rear surface attachment
Technical field
The present invention relates to properties of textile field tests, is the come off method of testing of performance of a kind of towel washing rear surface attachment specifically.
Background technology
Towel is people's indispensable textile products of living, its performance direct relation and affect daily life.The common performance indications about towel have the water imbibition of towel, the COLOR FASTNESS of colored towel, etc.General performance indications consumer can differentiate according to feel and naked eyes in the time of shopping, and manufacturing enterprise also can realize check by simple quality detecting method.But, after part index number need to use or after long-term use, just can discover, this just easily produce consumer, dealer and manufacturer follow-up after sale in generation contradiction.
The attachment performance that comes off in towel washing rear surface is the Key Performance Indicator of towel quality, has directly determined service life and the comfort of towel.Towel washing rear surface attachment comes off, refer to towel loose fiber in washing process mutually tangle and form hair a raw silk be attached to surperficial phenomenon, affect outward appearance and the use of towel.
At present, a lot of manufacturing enterprises are owing to there is no corresponding method of testing, therefore be difficult to carry out the detection that towel washing rear surface attachment comes off, cause manufacturing enterprise cannot judge the washing rear surface attachment of self product performance condition that comes off, cause consumer to complain because of above-mentioned performance issue, thereby called to account.
Summary of the invention
The technical problem to be solved in the present invention is, provides attachment come off performance, operability in a kind of Validity Test towel washing rear surface good, the method for testing that the evaluation degree of accuracy is high, towel washing rear surface attachment that reliability is high comes off performance.
Technical solution of the present invention is, the method for testing that provides a kind of towel washing rear surface attachment of following structure to come off performance, comprises the following steps:
(1) choose at least 3 representative towel samples;
(2) said sample is shaken to remove respectively fuds fuddled gently;
(3) will, through step (2) sample after treatment, add respectively enough accompanying and wash cloth, put into respectively automatic washing machine, add the standard wash agent of equivalent, when washing, need produce good stirring foam;
(4) after washing finishes, by sample and accompany washing to put into dryer, set corresponding bake out temperature, by sample drying;
(5) after sample drying, take out immediately, then sample is placed in textiles damping normal atmosphere, until arrive constant weight, described constant weight refers at set intervals weighs, and mass change is not more than 0.25%;
(6) will through step (5) sample after treatment respectively with do not have washed corresponding product put into grading case grade; In described grading case, be provided with light source and for placing the inclined plane of sample, described washed sample and do not have washed product be positioned over grading case inclined plane on, the angle that the straight line that the position of light source becomes to the center on inclined plane and inclined plane are is that 5 degree are to 15 degree, grading case is provided with observation panel, is 80 degree to 100 degree angles from observation sight line and the inclined plane of observation panel;
(7) according to the method in step (6), observe by naked eyes, the positive and negative that washed sample compares with not washed corresponding product respectively, using grading in positive and negative lower as rating result;
Need before first to preset grading standard in step (7), grading standard covers the surface area of sample as formulating foundation take the cast of different sizes and density.
Adopt above method, the present invention compared with prior art has the following advantages: adopt the present invention, by specific washing step, based on observational technique and the ranking method of grading case, when grading, need to all grade to towel positive and negative, get the value that rank is lower, to guarantee the accuracy of grading, when observation, can observe respectively and evaluate to guarantee by two people the objectivity of evaluation, the present invention can be effectively tests the towel washing rear surface attachment performance that comes off, being suitably for towel manufacturing enterprise adopts, testing reliability is high, the grading degree of accuracy is high, and there is stronger operability, prevent from causing follow-up dispute because of the towel washing rear surface attachment poor performance that comes off.
As improvement, in step (1), sample is carried out to pre-conditioned, pre-conditioned is 10%~25% in relative humidity, temperature is no more than under the environment of 50 degrees Celsius and carries out; Under such condition, carry out pre-conditioned, can make rating result more stable, reliable.
As improvement, described accompanying washes cloth as polylith, accompany to wash cloth for every and sew up and form by four pure textured polyester filaments knitted fabrics, every is accompanied the weight washing cloth is (50 ± 5) gram, mass area ratio is (310 ± 20) gram/m, accompanies to wash cloth for every to be of a size of (20 ± 4) cm × (20 ± 4) cm.
As improvement, described accompanying washes cloth as polylith, accompany for every and wash cloth by four textile bleaching machine fabrics or 50/50 polyester-cotton blend bleaching machine fabric, every is accompanied the weight washing cloth is (50 ± 5) gram, mass area ratio is (155 ± 5) gram/m, accompanies to wash cloth for every to be of a size of (92 ± 5) cm × (92 ± 5) cm.
As improvement, when observation, the eyes of normal correction eyesight and the distance of sample are 30~50cm; This scope is convenient to comparison and evaluation, further improves the evaluation degree of accuracy.
As improvement, the more even position of sample in step (6) after washing attachment covering is thereon cut one, unwashed corresponding product is also cut a sample of the same area, and the two equal surrounding is done and bound off, and can not allow cut lint and adhere to the position that attachment covers simultaneously.After this step process, grading reliability is higher.
As improvement, if the grading grade of many samples differs two-stage or more than two-stage, again choose the quantity of initial sample size twice, then wash, observe and grade by above step.
The specific embodiment
Below will with regard to specific embodiment, the invention will be further described.
The come off method of testing of performance of towel washing of the present invention rear surface attachment, comprises the following steps:
(1) choose at least 3 representative towel samples; Choose enough samples, can guarantee the stability of result;
(2) said sample is shaken to remove respectively fuds fuddled gently; In order to avoid fuds fuddled disturbs grading, improve grading accuracy;
(3) will be through step (2) sample after treatment, adding respectively enough accompanying washes cloth, put into respectively automatic washing machine, add the standard wash agent of equivalent, when washing, need produce good stirring foam, foam height is no more than (3 ± 0.5) cm in the time that finish washing cycle; Described automatic washing machine meets the A type washing machine of GB/T8629 regulation---and Qianmen is reinforced, horizontal rolling type;
(4) after washing finishes, by sample and accompany washing to put into dryer, set corresponding bake out temperature, by sample drying; Described dryer is rotation turning-over type dryer, meet GB/T8629 regulation with turning-over type dryer A type washing machine adapted;
(5) after sample drying, take out immediately, then sample is placed in textiles damping normal atmosphere, until arrive constant weight, described constant weight refers to that at set intervals (take two hours as interval) weigh, and mass change is not more than 0.25%; The damping environment of damping normal atmosphere should meet GB/T6529 normal atmosphere;
(6) will through step (5) sample after treatment respectively with do not have washed corresponding product put into grading case grade; In described grading case, be provided with light source and for placing the inclined plane of sample, described washed sample and do not have washed product be positioned over grading case inclined plane on, the angle that the straight line that the position of light source becomes to the center (center of sample) on inclined plane and inclined plane are is that 5 degree are to 15 degree, grading case is provided with observation panel, is 80 degree to 100 degree angles from observation sight line and the inclined plane of observation panel;
For grading case, not with accompanying drawing signal, therefore the concrete structure that further describes grading case at this, light source is arranged on the top of grading case, and eyes are looked squarely observation sample, keep the vertical sample of sight line as far as possible;
(7) according to the method in step (6), observe by naked eyes, the positive and negative that washed sample compares with not washed corresponding product respectively, using grading in positive and negative lower as rating result;
Need before first to preset grading standard in step (7), grading standard covers the surface area of sample as formulating foundation take the cast of different sizes and density.
In step (1), sample is carried out to pre-conditioned, pre-conditioned is 10%~25% in relative humidity, temperature is no more than under the environment of 50 degrees Celsius and carries out; Under such condition, carry out pre-conditioned, can make rating result more stable, reliable.
Described accompanying washes cloth as polylith, accompany to wash cloth for every and sew up and form by four pure textured polyester filaments knitted fabrics, every is accompanied the weight washing cloth is (50 ± 5) gram, mass area ratio is (310 ± 20) gram/m, accompanies to wash cloth for every to be of a size of (20 ± 4) cm × (20 ± 4) cm.
Described accompanying washes cloth as polylith, accompany for every and wash cloth by four textile bleaching machine fabrics or 50/50 polyester-cotton blend bleaching machine fabric, every is accompanied the weight washing cloth is (50 ± 5) gram, mass area ratio is (155 ± 5) gram/m, accompanies to wash cloth for every to be of a size of (92 ± 5) cm × (92 ± 5) cm.
When observation, the eyes of normal correction eyesight and the distance of sample are 30~50cm; This scope is convenient to comparison and evaluation, further improves the evaluation degree of accuracy.
The more even position of sample in step (6) after washing attachment covering is thereon cut one, unwashed corresponding product is also cut a sample of the same area, the two equal surrounding is done and bound off, can not allow simultaneously and cut lint and adhere to the position that attachment covers.After this step process, grading reliability is higher.
Below only just preferred embodiment of the present invention is described, but can not be interpreted as it is limitations on claims.The present invention is not only confined to above embodiment, and its concrete structure allows to change.In a word, all various variations of doing in the protection domain of independent claims of the present invention are all in protection scope of the present invention.