酒店在采購布草時(shí)，除了對(duì)織物的顏色、花型、紗織密度進(jìn)行挑選外，縮水率指標(biāo)同樣重要。除了產(chǎn)品本身的質(zhì)量問題，洗滌、烘干、熨燙都會(huì)對(duì)縮水率造成影響。

In addition to selecting the color, pattern, and yarn density of the fabric, the shrinkage index is also important when purchasing linen. In addition to the quality issues of the product itself, washing, drying, and ironing can all have an impact on the shrinkage rate.

"縮水率"的正式稱呼為"水洗尺寸變化率"，是指紡織物在洗滌或浸水后收縮的百分?jǐn)?shù)。

"Shrinkage rate", formally known as "wash size change rate", refers to the percentage of shrinkage of a textile fabric after washing or soaking.

縮水率=(洗滌前尺寸-洗滌后尺寸)/洗滌前尺寸×100%

Shrinkage ratio=(size before washing - size after washing)/size before washing × 100%

縮水率主要取決于不同面料之間的差異和織物結(jié)構(gòu)。

The shrinkage rate mainly depends on the differences between different fabrics and the fabric structure.

通常來說，

Generally speaking,

全棉經(jīng)向、緯向5%左右；

About 5% in warp and weft direction of cotton;

滌棉經(jīng)向、緯向4%左右。

The warp and weft directions of polyester and cotton are about 4%.

除此以外，編織松散會(huì)比緊密型產(chǎn)品更易縮水。

In addition, loosely woven products tend to shrink more easily than compact products.

縮水的原因：

Reason for shrinkage:

一：產(chǎn)品本身問題

1： Problems with the product itself

預(yù)縮工藝不規(guī)范或工藝本身有問題

The pre-shrinking process is not standardized or there are problems with the process itself

預(yù)縮工藝是指用物理方法減少織物浸水后的收縮以降低縮水率的工藝過程。預(yù)縮目的是使織物在經(jīng)緯向預(yù)行一定量的收縮，保持終成品縮水率的穩(wěn)定，同時(shí)也能一定程度增加紡織品柔軟性及手感。

Preshrinking process refers to the process of reducing the shrinkage of fabrics after immersion in water by physical methods to reduce the shrinkage rate. The purpose of preshrinking is to make the fabric undergo a certain amount of shrinkage in advance in the warp and weft directions, maintaining a stable shrinkage rate of the final product, while also increasing the softness and feel of the textile to a certain extent.

紡織品未達(dá)標(biāo)準(zhǔn)

Textiles not up to standard

對(duì)于生產(chǎn)不規(guī)范的布草供應(yīng)商，存在“以次充優(yōu)”現(xiàn)象，將40S產(chǎn)品代替60S產(chǎn)品銷售。織物紗支粗細(xì)不同，縮水率也不同。紗支粗的布縮水率越大，紗支細(xì)的織物縮水率越小。

There is a phenomenon of "inferior to superior" among linen suppliers who produce non-standard products, and they sell 40S products instead of 60S products. The shrinkage rate of fabrics varies with the yarn count thickness. The larger the shrinkage rate of fabrics with coarse count, the smaller the shrinkage rate of fabrics with fine count.

熱定型未做好

Heat setting not completed

熨燙過程中出現(xiàn)縮水，一般由于紡織品在生產(chǎn)過程中熱定型未做好。具體表現(xiàn)為：同一方向的熨燙時(shí)，面料的經(jīng)向或緯向收縮，造成縮水。

Shrinkage occurs during ironing, usually due to the fact that the textile is not properly heat set during production. Specifically, when ironing in the same direction, the fabric shrinks in the warp or weft direction, resulting in shrinkage.

二：洗滌原因：

2： Washing reason:

新布草洗滌溫度過高

New linen washing temperature too high

溫度對(duì)于布草洗滌來說是至關(guān)重要的，新布草初次洗滌溫度不宜超過90°C。改善建議：在過水過程中不添加任何洗滌劑或只添加主洗劑，洗滌溫度建議在70°C-80°C之間。

Temperature is crucial for cloth washing, and the initial washing temperature of new cloth should not exceed 90 ° C. Suggestions for improvement: Do not add any detergent or only add the main detergent during the water passing process, and the washing temperature is recommended to be between 70 ° C and 80 ° C.

烘干溫度過高

Drying temperature too high

烘干溫度超過95°不僅會(huì)造成縮水，還會(huì)導(dǎo)致纖維脆化、布草發(fā)黃等問題。以毛巾為例，正確烘干溫度保持在75°C左右，干燥后需再冷卻到5-10分鐘，冷卻溫度到50°左右。

Drying temperature above 95 ° will not only cause shrinkage, but also lead to fiber embrittlement, fabric yellowing, and other issues. Take the towel as an example. The correct drying temperature should be maintained at around 75 ° C. After drying, it should be cooled to 5-10 minutes, and the cooling temperature should be around 50 ° C.

熨燙溫度過高

Excessive ironing temperature

熨燙溫度是影響熨燙效果的主要因素。如果熨燙溫度過高，超過面料允許受熱溫度，面料易燙黃、燙焦、變形；熨燙溫度過低，雖不損傷面料，但達(dá)不到熨燙效果。一般來說，純棉面料熨燙溫度不宜超過180°。

The ironing temperature is the main factor affecting the ironing effect. If the ironing temperature is too high, exceeding the allowable heating temperature of the fabric, the fabric is prone to yellowing, scorching, and deformation; The ironing temperature is too low, which does not damage the fabric, but does not achieve the ironing effect. Generally speaking, the ironing temperature of pure cotton fabrics should not exceed 180 °.

酒店布草的參數(shù)規(guī)格應(yīng)考慮縮水率或者預(yù)計(jì)的洗后尺寸。產(chǎn)品在下完整訂單之前，應(yīng)在酒店洗衣房測(cè)試產(chǎn)前樣。通常經(jīng)過6次洗滌程序，產(chǎn)品會(huì)達(dá)到終洗后尺寸。

The parameter specifications for hotel linen should take into account shrinkage or the expected size after washing. Pre production samples should be tested in the hotel laundry before placing a complete order. Generally, after six washing procedures, the product will reach the final washing size.

采購大貨，需要對(duì)品質(zhì)的全流程把控，綜合考慮產(chǎn)品的規(guī)格參數(shù)和內(nèi)在產(chǎn)品質(zhì)量指標(biāo)，做好棉織品的維護(hù)和保養(yǎng)，創(chuàng)造良好的洗滌外部環(huán)境，強(qiáng)化細(xì)節(jié)管理，才能夠使布草在正常壽命內(nèi)大程度的發(fā)揮使用性能。更多相關(guān)事項(xiàng)了解就來我們網(wǎng)站http://www.ugogg.cn咨詢吧！

To purchase large goods, it is necessary to control the entire process of quality, comprehensively consider product specifications and internal product quality indicators, properly maintain and maintain cotton fabrics, create a good external environment for washing, and strengthen detailed management. Only in this way can cloth grass maximize its performance during its normal life. For more information, please visit our website http://www.ugogg.cn Consult!