US 2017/0014278 Al  9  Jan. 19, 2017  [0079]  After taping the backsheet films to the lab bench,  insulated gloves are placed on one’s hands and used to  remove the hot wetness indicator composition from the oven  and place it in the vicinity near the top most edge of the  backsheet film. The hot bird applicator is also removed from  the oven and placed near the top most edge of the backsheet  with its long dimension running parallel to the short 3"  dimension of the backsheet film and its legs resting firmly on  the lab bench rather than on the backsheet film itself. Next,  the hot wetness indicator composition is dispensed along the  front edge of the bird applicator and while firmly holding the  left and right legs of the bird applicator with downward  pressure, one firmly moves the bird applicator in the direc- [0076]  In one embodiment of the present invention, the  wetness indicator compositions, when present on a substrate,  is typically employed at levels which are effective at pro› viding visible signals, including from about 1 g per square  [0075]  The wetness indicator compositions may be pres› ent on a substrate in any desired pattern or configuration,  including, but not limited to, stripes, dots, geometric shapes,  irregular shapes, alphanumeric characters, pictorial repre› sentation of animals, pictorial representation of inanimate  objects, cartoon characters, anthropomorphic images, logos,  trademarks and any combination or arrangement thereof.  The wetness indicating compositions may be applied in any  pattern or in conjunction with permanent graphics, such as,  permanent graphics on the outer surfaces of a disposable  absorbent article.  [0078]  Wetness indicators, according to this method, are  first made by heating up the wetness indicator composition  about 10°  C. above its melting point. For the compositions  in the Examples A-H below, this temperature is in the range  of about 95°  C. to about 105°  C. At this same temperature,  a stainless steel bird applicator (Gardea Model Number  AP-6X002ts or equivalent, Gardea Incorporated, Pompano  Beach, Fla.) with a width of 4" to 6" and a gap of0.002" is  also heated. On a flat and level lab bench is placed a series  of up to 10 polypropylene backsheet films with a basis  weight of approximately 18 gsm with dimensions of around  3" by 8 11 • These 10 backsheet films are separated by about 2"  from one another and each is taped to the lab bench with  transparent tape running across the top most edge of each  film.  A. Controlled Temperature and Humidity (CTH) Stability  Test Method:  [0077]  Additional information on incorporation of wet› ness indicating compositions in and/or on substrates and/or  disposable absorbent articles can be found disclosed in U.S.  Pat. No. 4,022,211 issued, on May 10, 1977, to Timmons;  U.S. 6,297,42, issued on Oct. 2, 2001, to Olson; U.S. Pat.  No. 6,307,119 issued on Oct. 23 2001 to Cammarota; and  U.S. Patent Applications Nos. 20020007162Al entitled  "Absorbent articles having wetness indicating graphics  incorporating a training zone," filed on Aug. 13 2001,  published Jan. 17, 2002, in the name of Cammarota; and  20010053898Al entitled "Absorbent articles having wet› ness indicating graphics providing an interactive training  aid" filed on Jul. 24 2001, published Dec. 20, 2001, in the  name of Olson; and WO 00/76438 published on Dec. 21,  2000, and assigned to Kimberly-Clark Worldwide Inc., and  WO 00/76443 published on Dec. 21, 2000, and assigned to  Kimberly-Clark Worldwide Inc.  [0074]  In another optional embodiments of the present  invention, the substrate, or absorbent article comprising the  substrate may be designed to allow liquid, such as urine,  menses, blood, and the like, to contact the wetness indicator  composition in certain regions of the substrate, or absorbent  article at various loading levels. For example, a disposable  diaper may be designed to allow urine to contact the wetness  indicator composition located in the crotch region of the  product on the first urination, but contact the wetness  indicator composition in other regions of the disposable  diaper only after the amount of urine in the disposable diaper  reaches a predetermined threshold value. For example, the  absorbent core of the disposable diaper may have limited  ability to distribute urine from a given region of the dispos› able diaper until it contains sufficient urine to change the  colorant in a wetness indicator from its initial color state to  its final color state in this region, thereby preventing change  of the wetness indicator composition in adjacent regions of  the article until the overall urine loading in the disposable  diaper increases above a given level. As the total urine  loading in the disposable diaper increases, more regions of  the disposable diaper will contain sufficient urine to change  the colorant in a wetness indicator that may be located in  those regions from its initial color state to its final color state.  [0073]  In one optional embodiment of the present inven› tion, the change of the colorant from its initial color state to  its final color state is visible within a short time after the  wetness indicator composition is contacted with a liquid,  e.g., urine, menses, blood and the like. In one alternative  embodiment of the present invention, the change of the  colorant from its initial color state to its final color state is  visible within about 15 minutes, or within about 5 minutes  after a liquid, such as urine, menses, blood and the like,  contacts the wetness indicator composition.  [0072]  The wetness indicator composition when present  on a substrate may provide for a signal visible from outside  the substrate, while the product is being worn, e.g., visible  to the wearer, a caregiver, parent and the like. That is, the  wetness indicator compositions are affixed to the substrate at  a portion which enables it to be in fluid communication with  the liquid, e.g., urine, menses, blood and the like, and allows  the change initial color state to its final color state to visible  to an observer. For example, color or contrast change, is  visible through the substrate and/or the absorbent article,  such as, the of backsheet or garment-facing covering of a  disposable diaper article, which is also in fluid communi› cation with the liquid, such as urine menses, blood and the  like, deposited in the absorbent core of the substrate and/or  the absorbent article.  meter (gsm) to about 100 gsm, from about 5 gsm to about  75 gsm, and from about 10 gsm to about 60 gsm. However,  it is to be understood that the amount of wetness indicator  present on a substrate will depend upon many factors, such  as but not limited to, substrate type ( e.g., thick, thin, opacity,  bulky, dense, other physical properties etc.), substrate mate› rial, intended use of the substrate (e.g., disposable diaper,  panty liner, bandage etc.), method used for applying the  wetness indicator compositions, desired intensity of signal  in either  dry  or after contacting liquid, desired kinetics for  the color change, desired stability of the color within the  wetness indicator composition, desired pattern or configu› ration of the wetness indicator composition on substrate, and  combinations thereof.  Test Methods 